diff --git a/app/hooks/useTournamentRounds/index.ts b/app/hooks/useTournamentRounds/index.ts
index 230f20b1e..c617aec54 100644
--- a/app/hooks/useTournamentRounds/index.ts
+++ b/app/hooks/useTournamentRounds/index.ts
@@ -10,6 +10,8 @@ export function useTournamentRounds(args: UseTournamentRoundsArgs) {
   return React.useReducer(
     (oldState: UseTournamentRoundsState, action: UseTournamentRoundsAction) => {
       switch (action.type) {
+        case "REGENERATE_MAP_LIST":
+          return regenMapList(oldState);
         case "SET_ROUND_BEST_OF":
           const newState = { ...oldState };
           newState[action.data.side][action.data.index].bestOf =
diff --git a/app/hooks/useTournamentRounds/types.ts b/app/hooks/useTournamentRounds/types.ts
index 6122a3571..eaf1920de 100644
--- a/app/hooks/useTournamentRounds/types.ts
+++ b/app/hooks/useTournamentRounds/types.ts
@@ -19,10 +19,12 @@ export interface UseTournamentRoundsArgs {
   mapPool: Stage[];
 }
 
-export type UseTournamentRoundsAction = MyReducerAction<
-  "SET_ROUND_BEST_OF",
-  { newBestOf: BestOf; side: EliminationBracketSide; index: number }
->;
+export type UseTournamentRoundsAction =
+  | MyReducerAction<"REGENERATE_MAP_LIST">
+  | MyReducerAction<
+      "SET_ROUND_BEST_OF",
+      { newBestOf: BestOf; side: EliminationBracketSide; index: number }
+    >;
 
 // export type Action =
 //   | {
diff --git a/app/routes/to/$organization.$tournament/start.tsx b/app/routes/to/$organization.$tournament/start.tsx
index ab71d82c5..dfed948ac 100644
--- a/app/routes/to/$organization.$tournament/start.tsx
+++ b/app/routes/to/$organization.$tournament/start.tsx
@@ -2,6 +2,7 @@ import classNames from "classnames";
 import type { LinksFunction, LoaderFunction } from "remix";
 import { json, useLoaderData } from "remix";
 import invariant from "tiny-invariant";
+import { Button } from "~/components/Button";
 import { eliminationBracket } from "~/core/tournament/algorithms";
 import {
   EliminationBracketSide,
@@ -16,9 +17,7 @@ import type {
 import { findTournamentByNameForUrl } from "~/services/tournament";
 import startBracketTabStylesUrl from "~/styles/tournament-start.css";
 
-// 3) can regen maps via button
 // 4) can change any invidual map via dropdown (no regen)
-// 5) Blackbelly TC repeats Losers Round 3 and 4 -> add test & fix? (use real maps as test data)
 
 export const links: LinksFunction = () => {
   return [{ rel: "stylesheet", href: startBracketTabStylesUrl }];
@@ -46,8 +45,8 @@ export const loader: LoaderFunction = async ({ params }) => {
     0
   );
 
-  // TODO: and also below don't show losers if SE
-  const bracket = eliminationBracket(teamCount, "DE");
+  // TODO: handle many brackets
+  const bracket = eliminationBracket(teamCount, tournament.brackets[0].type);
   const initialState = participantCountToRoundsInfo({
     bracket,
     mapPool: tournament.mapPool,
@@ -63,16 +62,40 @@ export default function StartBracketTab() {
 
   return (
     <div className="tournament__start__container">
-      <RoundsCollection
-        side="winners"
-        rounds={rounds.winners}
-        dispatch={dispatch}
-      />
-      <RoundsCollection
-        side="losers"
-        rounds={rounds.losers}
-        dispatch={dispatch}
-      />
+      <ActionButtons dispatch={dispatch} />
+      <div className="tournament__start__round-collections-container">
+        <RoundsCollection
+          side="winners"
+          rounds={rounds.winners}
+          dispatch={dispatch}
+        />
+        {args.initialState.losers.length > 0 && (
+          <RoundsCollection
+            side="losers"
+            rounds={rounds.losers}
+            dispatch={dispatch}
+          />
+        )}
+      </div>
+      <ActionButtons dispatch={dispatch} />
+    </div>
+  );
+}
+
+function ActionButtons({
+  dispatch,
+}: {
+  dispatch: React.Dispatch<UseTournamentRoundsAction>;
+}) {
+  return (
+    <div className="tournament__start__buttons-container">
+      <Button>Preview bracket</Button>
+      <Button
+        variant="outlined"
+        onClick={() => dispatch({ type: "REGENERATE_MAP_LIST" })}
+      >
+        Regenerate all maps
+      </Button>
     </div>
   );
 }
@@ -87,7 +110,7 @@ function RoundsCollection({
   dispatch: React.Dispatch<UseTournamentRoundsAction>;
 }) {
   return (
-    <>
+    <div>
       <h2 className="tournament__start__title">{side}</h2>
       <div className="tournament__start__rounds-container">
         {rounds.map((round, roundIndex) => {
@@ -136,6 +159,6 @@ function RoundsCollection({
           );
         })}
       </div>
-    </>
+    </div>
   );
 }
diff --git a/app/styles/tournament-start.css b/app/styles/tournament-start.css
index b03b581b2..cd94f0bb3 100644
--- a/app/styles/tournament-start.css
+++ b/app/styles/tournament-start.css
@@ -1,9 +1,26 @@
 .tournament__start__title {
+  padding-block-end: var(--s-2);
+  padding-inline-start: var(--s-1-5);
   text-transform: capitalize;
 }
 
 .tournament__start__container {
+  display: flex;
   width: 100%;
+  flex-direction: column;
+  gap: var(--s-6);
+}
+
+.tournament__start__buttons-container {
+  display: flex;
+  justify-content: space-between;
+  gap: var(--s-1-5);
+}
+
+.tournament__start__round-collections-container {
+  display: flex;
+  flex-direction: column;
+  gap: var(--s-4);
 }
 
 .tournament__start__rounds-container {
diff --git a/app/utils/index.ts b/app/utils/index.ts
index ff75bcbec..e11815466 100644
--- a/app/utils/index.ts
+++ b/app/utils/index.ts
@@ -66,10 +66,15 @@ export type Unpacked<T> = T extends (infer U)[]
   ? U
   : T;
 
-export type MyReducerAction<K extends string, T extends {}> = {
-  type: K;
-  data: T;
-};
+export type MyReducerAction<
+  K extends string,
+  T extends {} | undefined = undefined
+> = T extends {}
+  ? {
+      type: K;
+      data: T;
+    }
+  : { type: K };
 
 // TODO:
 // export type InferredSerializedAPI<T> = Serialized<Prisma.PromiseReturnType<T>>;