diff --git a/competition_ranking_scores.sql b/competition_ranking_scores.sql
new file mode 100644
index 0000000..9397774
--- /dev/null
+++ b/competition_ranking_scores.sql
@@ -0,0 +1,9 @@
+CREATE TABLE IF NOT EXISTS competition_ranking_scores (
+    id bigserial PRIMARY KEY,
+    pid numeric(10) NOT NULL,
+    festival_id bigint NOT NULL,
+    score bigint NOT NULL,
+    team_id smallint NOT NULL,
+    team_score bigint NOT NULL,
+    is_first_upload boolean NOT NULL
+);
diff --git a/globals/upload_competition_ranking_score.go b/globals/upload_competition_ranking_score.go
new file mode 100644
index 0000000..2789762
--- /dev/null
+++ b/globals/upload_competition_ranking_score.go
@@ -0,0 +1,62 @@
+package globals
+
+import (
+	"fmt"
+	nex "github.com/PretendoNetwork/nex-go/v2"
+	ranking "github.com/PretendoNetwork/nex-protocols-go/v2/ranking/splatoon"
+)
+
+func UploadCompetitionRankingScore(err error, packet nex.PacketInterface, callID uint32, packetPayload []byte) (*nex.RMCMessage, *nex.Error) {
+	if err != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, err.Error())
+	}
+
+	request := packet.RMCMessage()
+	parameters := request.Parameters
+	endpoint := packet.Sender().Endpoint()
+	parametersStream := nex.NewByteStreamIn(parameters, endpoint.LibraryVersions(), endpoint.ByteStreamSettings())
+
+	// Read CompetitionRankingUploadScoreParam data
+	festivalID, streamErr := parametersStream.ReadUInt32LE()
+	if streamErr != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, fmt.Sprintf("Failed to read festival_id: %v", streamErr))
+	}
+
+	score, streamErr := parametersStream.ReadUInt32LE()
+	if streamErr != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, fmt.Sprintf("Failed to read score: %v", streamErr))
+	}
+
+	teamID, streamErr := parametersStream.ReadUInt8()
+	if streamErr != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, fmt.Sprintf("Failed to read team_id: %v", streamErr))
+	}
+
+	teamScore, streamErr := parametersStream.ReadUInt32LE()
+	if streamErr != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, fmt.Sprintf("Failed to read team_score: %v", streamErr))
+	}
+
+	isFirstUpload, streamErr := parametersStream.ReadBool()
+	if streamErr != nil {
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, fmt.Sprintf("Failed to read is_first_upload: %v", streamErr))
+	}
+
+	pid := packet.Sender().PID()
+
+	_, dbErr := Postgres.Exec(
+		"INSERT INTO competition_ranking_scores (pid, festival_id, score, team_id, team_score, is_first_upload) VALUES ($1, $2, $3, $4, $5, $6)",
+		pid, festivalID, score, teamID, teamScore, isFirstUpload,
+	)
+	if dbErr != nil {
+		Logger.Error(dbErr.Error())
+		return nil, nex.NewError(nex.ResultCodes.Core.Unknown, "Database error")
+	}
+
+	rmcResponse := nex.NewRMCSuccess(endpoint, nil)
+	rmcResponse.ProtocolID = ranking.ProtocolID
+	rmcResponse.MethodID = ranking.MethodUploadCompetitionRankingScore
+	rmcResponse.CallID = callID
+
+	return rmcResponse, nil
+}
diff --git a/nex/register_common_secure_server_protocols.go b/nex/register_common_secure_server_protocols.go
index 7e6cb85..1e5c1ba 100644
--- a/nex/register_common_secure_server_protocols.go
+++ b/nex/register_common_secure_server_protocols.go
@@ -56,6 +56,7 @@ func registerCommonSecureServerProtocols() {
 	commonMatchmakeExtensionProtocol.SetManager(globals.MatchmakingManager)
 
 	rankingProtocol := ranking.NewProtocol(globals.SecureEndpoint)
+	rankingProtocol.UploadCompetitionRankingScore = globals.UploadCompetitionRankingScore
 	globals.SecureEndpoint.RegisterServiceProtocol(rankingProtocol)
 	commonranking.NewCommonProtocol(rankingProtocol)
 }