diff --git a/app/features/scanner/components/LivePage.tsx b/app/features/scanner/components/LivePage.tsx
index 4604eef0e..3e42206ad 100644
--- a/app/features/scanner/components/LivePage.tsx
+++ b/app/features/scanner/components/LivePage.tsx
@@ -1,4 +1,4 @@
-import { Fragment, useCallback, useEffect, useRef, useState } from "react";
+import { useCallback, useEffect, useRef, useState } from "react";
 import {
 	listVideoInputs,
 	openVirtualCamera,
@@ -22,7 +22,6 @@ import {
 	invalidObjectiveEvents,
 	isIngestableMatch,
 } from "../core/match-builder";
-import { assignMatchSets } from "../core/match-sets";
 import { TimelineBuilder } from "../core/timeline/index";
 import {
 	clearEvents,
@@ -40,7 +39,8 @@ import { EventsSummary } from "./EventsSummary";
 import { downloadEventsCsv } from "./events-csv";
 import { type FixtureData, saveFixture } from "./fixture-export";
 import { SENDOU_UPLOAD_ENABLED } from "./flags";
-import { MatchCard, SetDivider } from "./MatchCard";
+import { MatchCard } from "./MatchCard";
+import { MatchLobbyTabs } from "./MatchLobbyTabs";
 import { ObjectiveTimeline } from "./ObjectiveTimeline";
 import {
 	aggregateSendStatus,
@@ -254,8 +254,6 @@ export function LivePage({
 	}, [deviceId, refreshFeed, send]);
 
 	const builtMatches = buildScannerMatches(feed);
-	const setNumbers = assignMatchSets(builtMatches.map((b) => b.match));
-	const showSetDividers = (setNumbers.at(-1) ?? 1) > 1;
 	const groupedEvents = new Set(builtMatches.flatMap((b) => b.sources));
 	const ungroupedFeed = feed.filter((e) => !groupedEvents.has(e));
 
@@ -366,33 +364,30 @@ export function LivePage({
 					{feed.length === 0 ? (
 						<p className="score">No detections yet.</p>
 					) : null}
-					{[...builtMatches].reverse().map((built, reverseIndex) => {
-						const index = builtMatches.length - 1 - reverseIndex;
-						const id = built.sources[0]!.id!;
-						const ingestable = isIngestableMatch(built.match);
-						// counter reads render as one timeline chart, not a card each;
-						// a non-SZ match's reads (objective null) are never shown
-						const objectiveEvents = built.match.objective
-							? built.sources
-									.filter((e) => e.type === OBJECTIVE_EVENT_TYPE)
-									.map((e) => ({ t: e.t, data: e.data as ObjectiveData }))
-							: [];
-						const cardEvents = withoutRepeatEvents(built.sources).filter(
-							(e) => e.type !== OBJECTIVE_EVENT_TYPE,
-						);
-						return (
-							<Fragment key={id}>
-								{showSetDividers &&
-								setNumbers[index + 1] !== setNumbers[index] ? (
-									<SetDivider number={setNumbers[index]!} />
-								) : null}
+					<MatchLobbyTabs
+						matches={builtMatches}
+						keyOf={(built) => built.sources[0]!.id!}
+						renderMatch={(built, justFormed) => {
+							const id = built.sources[0]!.id!;
+							const ingestable = isIngestableMatch(built.match);
+							// counter reads render as one timeline chart, not a card each;
+							// a non-SZ match's reads (objective null) are never shown
+							const objectiveEvents = built.match.objective
+								? built.sources
+										.filter((e) => e.type === OBJECTIVE_EVENT_TYPE)
+										.map((e) => ({ t: e.t, data: e.data as ObjectiveData }))
+								: [];
+							const cardEvents = withoutRepeatEvents(built.sources).filter(
+								(e) => e.type !== OBJECTIVE_EVENT_TYPE,
+							);
+							const newest = built === builtMatches.at(-1);
+							return (
 								<MatchCard
 									match={built.match}
-									live={
-										running && reverseIndex === 0 && built.match.winner === null
-									}
-									inProgress={reverseIndex === 0 && built.match.winner === null}
+									live={running && newest && built.match.winner === null}
+									inProgress={newest && built.match.winner === null}
 									ingestable={ingestable}
+									justFormed={justFormed}
 									send={aggregateSendStatus(built.sources)}
 									onSend={
 										SENDOU_UPLOAD_ENABLED && sendouUser && ingestable
@@ -420,9 +415,9 @@ export function LivePage({
 										/>
 									))}
 								</MatchCard>
-							</Fragment>
-						);
-					})}
+							);
+						}}
+					/>
 					{ungroupedFeed.length > 0 ? (
 						<EventsSummary
 							events={ungroupedFeed}
diff --git a/app/features/scanner/components/MatchCard.tsx b/app/features/scanner/components/MatchCard.tsx
index 0ba6c4286..2f07280c1 100644
--- a/app/features/scanner/components/MatchCard.tsx
+++ b/app/features/scanner/components/MatchCard.tsx
@@ -31,6 +31,7 @@ export function MatchCard({
 	live = false,
 	inProgress = false,
 	ingestable = true,
+	justFormed = false,
 	children,
 }: {
 	match: ScannerMatch;
@@ -47,10 +48,15 @@ export function MatchCard({
 	inProgress?: boolean;
 	/** false = isIngestableMatch rejected it (not a private battle) */
 	ingestable?: boolean;
+	/** the scan just formed this match — play the enter animation */
+	justFormed?: boolean;
 	/** expandable detail content, typically the source event cards */
 	children?: React.ReactNode;
 }) {
 	const [expanded, setExpanded] = useState(false);
+	// fixed at mount: re-rendering must not cut the animation short, and a card
+	// remounting for another reason (switching lobby tabs) must not replay it
+	const [enter] = useState(justFormed);
 
 	// one-shot flash animations only on a state *change*, so already-sent
 	// matches don't replay the glow on every mount
@@ -122,6 +128,7 @@ export function MatchCard({
 	);
 
 	const className = clsx("match-card", send?.state, {
+		enter,
 		live,
 		"flash-sent": flash === "sent",
 		"flash-failed": flash === "failed",
diff --git a/app/features/scanner/components/MatchLobbyTabs.tsx b/app/features/scanner/components/MatchLobbyTabs.tsx
new file mode 100644
index 000000000..5b4d1d1c6
--- /dev/null
+++ b/app/features/scanner/components/MatchLobbyTabs.tsx
@@ -0,0 +1,137 @@
+/**
+ * Lobby tabs over the match feed: private battles (the games /ingest cares
+ * about) split from X Battles and everything else, so a scan that picked up
+ * ranked play between tournament sets stays readable. Sets are a private
+ * battle concept — consecutive games between the same two teams — so only
+ * that tab gets set dividers, and set numbers are assigned within the tab.
+ */
+
+import { Fragment, useEffect, useRef } from "react";
+import {
+	SendouTab,
+	SendouTabList,
+	SendouTabPanel,
+	SendouTabs,
+} from "~/components/elements/Tabs";
+import type { DetectedEvent } from "../core/detectors/types";
+import type { BuiltMatch } from "../core/match-builder";
+import { assignMatchSets } from "../core/match-sets";
+import type { ScannerLobby } from "../scanner-types";
+import { SetDivider } from "./MatchCard";
+
+type LobbyGroup = "private" | "x" | "other";
+
+const LOBBY_GROUPS: LobbyGroup[] = ["private", "x", "other"];
+
+const LOBBY_GROUP_LABELS: Record<LobbyGroup, string> = {
+	private: "Private Battle",
+	x: "X Battle",
+	other: "Other",
+};
+
+const NO_KEYS: ReadonlySet<React.Key> = new Set();
+
+export function MatchLobbyTabs<E extends DetectedEvent>({
+	matches,
+	keyOf,
+	renderMatch,
+}: {
+	/** built matches in chronological order (oldest first) */
+	matches: readonly BuiltMatch<E>[];
+	/** stable render key for one match, typically its first source event's id */
+	keyOf: (built: BuiltMatch<E>) => React.Key;
+	/** `justFormed`: the match appeared while the page was open (enter animation) */
+	renderMatch: (built: BuiltMatch<E>, justFormed: boolean) => React.ReactNode;
+}) {
+	const justFormedKeys = useJustFormedKeys(matches.map(keyOf));
+
+	const groups = LOBBY_GROUPS.map((group) => ({
+		group,
+		matches: matches.filter((built) => lobbyGroup(built.match.lobby) === group),
+	})).filter(({ matches: groupMatches }) => groupMatches.length > 0);
+
+	if (groups.length === 0) return null;
+
+	return (
+		<SendouTabs>
+			<SendouTabList>
+				{groups.map(({ group, matches: groupMatches }) => (
+					<SendouTab key={group} id={group} number={groupMatches.length}>
+						{LOBBY_GROUP_LABELS[group]}
+					</SendouTab>
+				))}
+			</SendouTabList>
+			{groups.map(({ group, matches: groupMatches }) => (
+				<SendouTabPanel key={group} id={group} className="match-list">
+					<MatchList
+						matches={groupMatches}
+						sets={group === "private"}
+						keyOf={keyOf}
+						justFormedKeys={justFormedKeys}
+						renderMatch={renderMatch}
+					/>
+				</SendouTabPanel>
+			))}
+		</SendouTabs>
+	);
+}
+
+function lobbyGroup(lobby: ScannerLobby | null): LobbyGroup {
+	if (lobby === "PRIVATE") return "private";
+	if (lobby === "X") return "x";
+	return "other";
+}
+
+/**
+ * Keys of the matches that showed up since the previous render — the ones a
+ * scan just formed. A list arriving whole (the live feed loaded from storage,
+ * a saved VoD opened) is not "just formed": every card would animate in at
+ * once for something the user did not watch happen.
+ */
+function useJustFormedKeys(keys: React.Key[]): ReadonlySet<React.Key> {
+	const seenRef = useRef<Set<React.Key> | null>(null);
+	const seen = seenRef.current;
+
+	// after commit, not during render: under StrictMode the render runs twice
+	// and the second pass would find every key already seen
+	useEffect(() => {
+		seenRef.current = new Set(keys);
+	});
+
+	if (seen === null) return NO_KEYS;
+	const justFormed = keys.filter((key) => !seen.has(key));
+	return justFormed.length === keys.length && keys.length > 1
+		? NO_KEYS
+		: new Set(justFormed);
+}
+
+function MatchList<E extends DetectedEvent>({
+	matches,
+	sets,
+	keyOf,
+	justFormedKeys,
+	renderMatch,
+}: {
+	matches: readonly BuiltMatch<E>[];
+	sets: boolean;
+	keyOf: (built: BuiltMatch<E>) => React.Key;
+	justFormedKeys: ReadonlySet<React.Key>;
+	renderMatch: (built: BuiltMatch<E>, justFormed: boolean) => React.ReactNode;
+}) {
+	const setNumbers = sets ? assignMatchSets(matches.map((b) => b.match)) : [];
+	const showSetDividers = (setNumbers.at(-1) ?? 1) > 1;
+
+	// newest match on top; the builder keeps ascending time order
+	return [...matches].reverse().map((built, reverseIndex) => {
+		const index = matches.length - 1 - reverseIndex;
+		const key = keyOf(built);
+		return (
+			<Fragment key={key}>
+				{showSetDividers && setNumbers[index + 1] !== setNumbers[index] ? (
+					<SetDivider number={setNumbers[index]!} />
+				) : null}
+				{renderMatch(built, justFormedKeys.has(key))}
+			</Fragment>
+		);
+	});
+}
diff --git a/app/features/scanner/components/VodPage.tsx b/app/features/scanner/components/VodPage.tsx
index 8be0e47c0..08450b14b 100644
--- a/app/features/scanner/components/VodPage.tsx
+++ b/app/features/scanner/components/VodPage.tsx
@@ -12,14 +12,7 @@
  * Completed scans are persisted to IndexedDB keyed by file name
  * (src/store/vods.ts); the default view lists them for reinspection.
  */
-import {
-	Fragment,
-	useCallback,
-	useEffect,
-	useMemo,
-	useRef,
-	useState,
-} from "react";
+import { useCallback, useEffect, useMemo, useRef, useState } from "react";
 import { Link } from "react-router";
 import { openVodScan } from "../capture/vod-frames";
 import { connectAbilities } from "../core/ability-harvest";
@@ -33,7 +26,6 @@ import {
 	invalidObjectiveEvents,
 	isIngestableMatch,
 } from "../core/match-builder";
-import { assignMatchSets } from "../core/match-sets";
 import { TimelineBuilder } from "../core/timeline/index";
 import type { SendStatus } from "../store/events";
 import {
@@ -52,7 +44,8 @@ import { downloadEventsCsv } from "./events-csv";
 import type { FixtureData } from "./fixture-export";
 import { SENDOU_UPLOAD_ENABLED } from "./flags";
 import { formatTime } from "./format";
-import { MatchCard, SetDivider } from "./MatchCard";
+import { MatchCard } from "./MatchCard";
+import { MatchLobbyTabs } from "./MatchLobbyTabs";
 import { ObjectiveTimeline } from "./ObjectiveTimeline";
 import {
 	countIngestableMatches,
@@ -148,8 +141,6 @@ export function VodPage({
 	);
 
 	const builtMatches = buildScannerMatches(matches.map((m) => m.event));
-	const setNumbers = assignMatchSets(builtMatches.map((b) => b.match));
-	const showSetDividers = (setNumbers.at(-1) ?? 1) > 1;
 	const vodMatchByEvent = new Map(matches.map((m) => [m.event, m] as const));
 	const groupedEvents = new Set(builtMatches.flatMap((b) => b.sources));
 	const ungroupedMatches = matches.filter((m) => !groupedEvents.has(m.event));
@@ -600,34 +591,31 @@ export function VodPage({
 								: "No matches found in this VoD."}
 						</p>
 					) : null}
-					{/* newest match on top; the builder keeps ascending video-time order */}
-					{[...builtMatches].reverse().map((built, reverseIndex) => {
-						const index = builtMatches.length - 1 - reverseIndex;
-						const ingestable = isIngestableMatch(built.match);
-						// counter reads render as one timeline chart, not a card each;
-						// a non-SZ match's reads (objective null) are never shown
-						const objectiveEvents = built.match.objective
-							? built.sources
-									.filter((e) => e.type === OBJECTIVE_EVENT_TYPE)
-									.map((e) => ({ t: e.t, data: e.data as ObjectiveData }))
-							: [];
-						const cardEvents = withoutRepeatEvents(built.sources).filter(
-							(e) => e.type !== OBJECTIVE_EVENT_TYPE,
-						);
-						return (
-							<Fragment key={vodMatchByEvent.get(built.sources[0]!)!.key}>
-								{showSetDividers &&
-								setNumbers[index + 1] !== setNumbers[index] ? (
-									<SetDivider number={setNumbers[index]!} />
-								) : null}
+					<MatchLobbyTabs
+						matches={builtMatches}
+						keyOf={(built) => vodMatchByEvent.get(built.sources[0]!)!.key}
+						renderMatch={(built, justFormed) => {
+							const ingestable = isIngestableMatch(built.match);
+							// counter reads render as one timeline chart, not a card each;
+							// a non-SZ match's reads (objective null) are never shown
+							const objectiveEvents = built.match.objective
+								? built.sources
+										.filter((e) => e.type === OBJECTIVE_EVENT_TYPE)
+										.map((e) => ({ t: e.t, data: e.data as ObjectiveData }))
+								: [];
+							const cardEvents = withoutRepeatEvents(built.sources).filter(
+								(e) => e.type !== OBJECTIVE_EVENT_TYPE,
+							);
+							return (
 								<MatchCard
 									match={built.match}
 									inProgress={
 										status === "scanning" &&
-										reverseIndex === 0 &&
+										built === builtMatches.at(-1) &&
 										built.match.winner === null
 									}
 									ingestable={ingestable}
+									justFormed={justFormed}
 									send={ingestable ? bulkSend : undefined}
 								>
 									{objectiveEvents.length > 0 ? (
@@ -649,9 +637,9 @@ export function VodPage({
 										);
 									})}
 								</MatchCard>
-							</Fragment>
-						);
-					})}
+							);
+						}}
+					/>
 					{ungroupedMatches.length > 0 ? (
 						<EventsSummary
 							events={ungroupedMatches.map((m) => m.event)}
diff --git a/app/features/scanner/components/styles.css b/app/features/scanner/components/styles.css
index e56055a40..5aa12c845 100644
--- a/app/features/scanner/components/styles.css
+++ b/app/features/scanner/components/styles.css
@@ -163,6 +163,12 @@ app/styles/vars.css (the emberz copies of those tokens were dropped).
 	gap: 12px;
 }
 
+.scanner-app .match-list {
+	display: flex;
+	flex-direction: column;
+	gap: 12px;
+}
+
 .scanner-app .card {
 	background: var(--color-bg-high);
 	border-radius: var(--radius-box);
@@ -653,7 +659,11 @@ app/styles/vars.css (the emberz copies of those tokens were dropped).
 	overflow: hidden;
 	border-radius: var(--radius-box);
 	background-color: var(--color-bg-high);
-	animation: scanner-card-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
+
+	/* only cards the scan just formed animate in — see MatchCard's `enter` */
+	&.enter {
+		animation: scanner-card-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
+	}
 
 	/* one overlay element all send-state effects draw on */
 	&::after {