diff --git a/index.css b/index.css
index 5a06bfa..3330c61 100644
--- a/index.css
+++ b/index.css
@@ -317,6 +317,48 @@ span:empty {
 	max-width: 44rem;
 }
 
+.personal-best-row {
+	display: none;
+	align-items: center;
+	gap: 0.45rem;
+	font-size: 1.3rem;
+	font-weight: 700;
+	opacity: 0.92;
+	line-height: 1.2;
+}
+
+#friendScores.has-personal-best .personal-best-row {
+	display: flex;
+}
+
+.personal-best-label {
+	font-size: 1rem;
+	font-weight: 700;
+	opacity: 0.75;
+	letter-spacing: 0.04em;
+}
+
+.personal-best-acc {
+	font-feature-settings: "tnum";
+	font-variant-numeric: tabular-nums;
+}
+
+.personal-best-delta {
+	font-size: 1.15rem;
+	font-weight: 700;
+	font-feature-settings: "tnum";
+	font-variant-numeric: tabular-nums;
+	min-width: 4.2ch;
+}
+
+.personal-best-delta.personal-best-delta--ahead {
+	color: #3ddc97;
+}
+
+.personal-best-delta.personal-best-delta--behind {
+	color: #ff6b6b;
+}
+
 #friendScoresHeader {
 	font-size: 1.3rem;
 	font-weight: 700;
diff --git a/index.html b/index.html
index ab02353..e56002e 100644
--- a/index.html
+++ b/index.html
@@ -39,6 +39,11 @@
 			</div>
 		</div>
 		<div id="friendScores" aria-live="polite">
+			<div id="personalBestRow" class="personal-best-row">
+				<span class="personal-best-label">PB</span>
+				<span id="personalBestAcc" class="personal-best-acc"></span>
+				<span id="personalBestDelta" class="personal-best-delta"></span>
+			</div>
 			<div id="friendScoresHeader"><img id="friendScoresPlayerAvatar" src="images/unknown.svg" alt=""> <span id="friendScoresHeaderText">frenz</span> <img id="friendScoresHeaderImg" src="assets/peepohigh.webp" alt=""></div>
 			<ol id="friendScoresList"></ol>
 			<div id="friendScoresEmpty">No map loaded</div>
diff --git a/index.js b/index.js
index 0c2734a..34d91bc 100644
--- a/index.js
+++ b/index.js
@@ -246,6 +246,9 @@ var beatSaberPlus = {
         switch (data._event) {
           case "gameState":
             document.body.dataset.gameState = data.gameStateChanged;
+            if (data.gameStateChanged === "Menu") {
+              resetPersonalBestDeltaPlaceholder();
+            }
             break;
           case "mapInfo":
             void updateMapInfo(data.mapInfoChanged);
@@ -475,6 +478,9 @@ var friendScoresEmpty = must("friendScoresEmpty");
 var friendScoresHeaderText = must("friendScoresHeaderText");
 var friendScoresPlayerAvatar = must("friendScoresPlayerAvatar");
 var friendScoresHeaderImg = must("friendScoresHeaderImg");
+var personalBestAcc = must("personalBestAcc");
+var personalBestDelta = must("personalBestDelta");
+var currentPbAccuracyPercent = null;
 var cachedConfiguredPlayerAvatarKey = "";
 var cachedConfiguredPlayerAvatarSrc = "images/unknown.svg";
 async function refreshConfiguredPlayerAvatar() {
@@ -497,11 +503,42 @@ async function refreshConfiguredPlayerAvatar() {
   cachedConfiguredPlayerAvatarSrc = profile?.avatar?.trim() || "images/unknown.svg";
   friendScoresPlayerAvatar.src = cachedConfiguredPlayerAvatarSrc;
 }
+function applyPersonalBestRow(pbPercent) {
+  currentPbAccuracyPercent = pbPercent;
+  friendScoresPanel.classList.toggle("has-personal-best", pbPercent !== null);
+  if (pbPercent === null) {
+    personalBestAcc.textContent = "";
+    personalBestDelta.textContent = "";
+    personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+    return;
+  }
+  personalBestAcc.textContent = `${pbPercent.toFixed(2)}%`;
+  resetPersonalBestDeltaPlaceholder();
+}
+function resetPersonalBestDeltaPlaceholder() {
+  if (currentPbAccuracyPercent === null) return;
+  personalBestDelta.textContent = "\u2014";
+  personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+}
+function updatePersonalBestDelta(liveAccuracyPercent) {
+  if (currentPbAccuracyPercent === null) return;
+  const delta = liveAccuracyPercent - currentPbAccuracyPercent;
+  personalBestDelta.textContent = `${delta >= 0 ? "+" : ""}${delta.toFixed(2)}%`;
+  personalBestDelta.classList.toggle("personal-best-delta--ahead", delta > 5e-4);
+  personalBestDelta.classList.toggle("personal-best-delta--behind", delta < -5e-4);
+  if (Math.abs(delta) <= 5e-4) {
+    personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+  }
+}
 function updateScore(score) {
-  if (!settings.score) return;
-  accuracy.textContent = (score.accuracy * 100).toFixed(1);
-  mistakes.textContent = score.missCount ? String(score.missCount) : "";
-  accuracy.classList.toggle("failed", score.currentHealth === 0);
+  if (settings.score) {
+    accuracy.textContent = (score.accuracy * 100).toFixed(1);
+    mistakes.textContent = score.missCount ? String(score.missCount) : "";
+    accuracy.classList.toggle("failed", score.currentHealth === 0);
+  }
+  if (settings.friends) {
+    updatePersonalBestDelta(score.accuracy * 100);
+  }
 }
 function avatarFromScore(score) {
   if (typeof score.player === "object" && score.player?.avatar) {
@@ -511,6 +548,7 @@ function avatarFromScore(score) {
   return url || null;
 }
 function clearFriendScores(message) {
+  applyPersonalBestRow(null);
   friendScoresList.replaceChildren();
   friendScoresEmpty.textContent = message;
   friendScoresHeaderText.textContent = "frenz?";
@@ -548,6 +586,7 @@ function friendsRelationListKey(playerId) {
 }
 function beginFriendScoresForNewMapContext() {
   friendScoreRequestId += 1;
+  applyPersonalBestRow(null);
   if (!settings.friends) return;
   if (!currentMapHash) {
     clearFriendScores("No map loaded");
@@ -578,6 +617,7 @@ async function refreshMapFriendScores() {
     clearFriendScores("Waiting for BeatLeader player id");
     return;
   }
+  applyPersonalBestRow(null);
   friendScoresList.replaceChildren();
   friendScoresPanel.classList.remove("has-items");
   friendScoresPanel.classList.add("is-loading");
@@ -594,10 +634,12 @@ async function refreshMapFriendScores() {
       friendsRelationCache = fetched;
       return fetched;
     })();
-    const [leaderboards, friends] = await Promise.all([
+    const [leaderboards, friends, selfProfile] = await Promise.all([
       fetchBLLeaderboardsByHash(hash),
-      friendsPromise
+      friendsPromise,
+      fetchBeatLeaderPlayer(playerId)
     ]);
+    const myBeatLeaderId = selfProfile?.id ?? playerId;
     if (requestId !== friendScoreRequestId) return;
     if (leaderboards.length === 0) {
       clearFriendScores("No BeatLeader leaderboards found");
@@ -620,6 +662,15 @@ async function refreshMapFriendScores() {
     }
     const scores = await fetchAllMapScoresByHash(hash, forPlayMode);
     if (requestId !== friendScoreRequestId) return;
+    let playerPbAcc = null;
+    for (const score of scores) {
+      const scorePlayerId = score.playerId ?? (typeof score.player === "object" ? score.player?.id : null);
+      const playerKey = scorePlayerId == null ? "" : String(scorePlayerId);
+      if (!playerKey || playerKey !== String(myBeatLeaderId)) continue;
+      const acc = normalizeAccuracy(score.accuracy ?? score.acc);
+      if (acc === null) continue;
+      if (playerPbAcc === null || acc > playerPbAcc) playerPbAcc = acc;
+    }
     const bestByPlayer = /* @__PURE__ */ new Map();
     for (const score of scores) {
       const scorePlayerId = score.playerId ?? (typeof score.player === "object" ? score.player?.id : null);
@@ -640,6 +691,10 @@ async function refreshMapFriendScores() {
         });
       }
     }
+    if (playerPbAcc !== null) {
+      bestByPlayer.delete(String(myBeatLeaderId));
+    }
+    applyPersonalBestRow(playerPbAcc);
     const sorted = Array.from(bestByPlayer.values()).sort((a, b) => b.acc - a.acc);
     renderFriendScores(sorted);
   } catch {
diff --git a/src/client/index.ts b/src/client/index.ts
index 2a17775..13d0255 100644
--- a/src/client/index.ts
+++ b/src/client/index.ts
@@ -72,6 +72,9 @@ const beatSaberPlus = {
 				switch (data._event) {
 					case "gameState":
 						document.body.dataset.gameState = data.gameStateChanged;
+						if (data.gameStateChanged === "Menu") {
+							resetPersonalBestDeltaPlaceholder();
+						}
 						break;
 					case "mapInfo":
 						void updateMapInfo(data.mapInfoChanged);
@@ -342,6 +345,11 @@ const friendScoresEmpty = must<HTMLElement>("friendScoresEmpty");
 const friendScoresHeaderText = must<HTMLElement>("friendScoresHeaderText");
 const friendScoresPlayerAvatar = must<HTMLImageElement>("friendScoresPlayerAvatar");
 const friendScoresHeaderImg = must<HTMLImageElement>("friendScoresHeaderImg");
+const personalBestAcc = must<HTMLElement>("personalBestAcc");
+const personalBestDelta = must<HTMLElement>("personalBestDelta");
+
+/** BeatLeader PB (percent) for the current map + difficulty; null if none or friends panel inactive. */
+let currentPbAccuracyPercent: number | null = null;
 
 let cachedConfiguredPlayerAvatarKey = "";
 let cachedConfiguredPlayerAvatarSrc = "images/unknown.svg";
@@ -367,11 +375,45 @@ async function refreshConfiguredPlayerAvatar() {
 	friendScoresPlayerAvatar.src = cachedConfiguredPlayerAvatarSrc;
 }
 
+function applyPersonalBestRow(pbPercent: number | null) {
+	currentPbAccuracyPercent = pbPercent;
+	friendScoresPanel.classList.toggle("has-personal-best", pbPercent !== null);
+	if (pbPercent === null) {
+		personalBestAcc.textContent = "";
+		personalBestDelta.textContent = "";
+		personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+		return;
+	}
+	personalBestAcc.textContent = `${pbPercent.toFixed(2)}%`;
+	resetPersonalBestDeltaPlaceholder();
+}
+
+function resetPersonalBestDeltaPlaceholder() {
+	if (currentPbAccuracyPercent === null) return;
+	personalBestDelta.textContent = "—";
+	personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+}
+
+function updatePersonalBestDelta(liveAccuracyPercent: number) {
+	if (currentPbAccuracyPercent === null) return;
+	const delta = liveAccuracyPercent - currentPbAccuracyPercent;
+	personalBestDelta.textContent = `${delta >= 0 ? "+" : ""}${delta.toFixed(2)}%`;
+	personalBestDelta.classList.toggle("personal-best-delta--ahead", delta > 0.0005);
+	personalBestDelta.classList.toggle("personal-best-delta--behind", delta < -0.0005);
+	if (Math.abs(delta) <= 0.0005) {
+		personalBestDelta.classList.remove("personal-best-delta--ahead", "personal-best-delta--behind");
+	}
+}
+
 function updateScore(score: Score) {
-	if (!settings.score) return;
-	accuracy.textContent = (score.accuracy * 100).toFixed(1);
-	mistakes.textContent = score.missCount ? String(score.missCount) : "";
-	accuracy.classList.toggle("failed", score.currentHealth === 0);
+	if (settings.score) {
+		accuracy.textContent = (score.accuracy * 100).toFixed(1);
+		mistakes.textContent = score.missCount ? String(score.missCount) : "";
+		accuracy.classList.toggle("failed", score.currentHealth === 0);
+	}
+	if (settings.friends) {
+		updatePersonalBestDelta(score.accuracy * 100);
+	}
 }
 
 function avatarFromScore(score: BeatLeaderScore): string | null {
@@ -383,6 +425,7 @@ function avatarFromScore(score: BeatLeaderScore): string | null {
 }
 
 function clearFriendScores(message: string) {
+	applyPersonalBestRow(null);
 	friendScoresList.replaceChildren();
 	friendScoresEmpty.textContent = message;
 	friendScoresHeaderText.textContent = "frenz?";
@@ -427,6 +470,7 @@ function friendsRelationListKey(playerId: string): string {
  */
 function beginFriendScoresForNewMapContext() {
 	friendScoreRequestId += 1;
+	applyPersonalBestRow(null);
 	if (!settings.friends) return;
 	if (!currentMapHash) {
 		clearFriendScores("No map loaded");
@@ -458,6 +502,7 @@ async function refreshMapFriendScores() {
 		clearFriendScores("Waiting for BeatLeader player id");
 		return;
 	}
+	applyPersonalBestRow(null);
 	friendScoresList.replaceChildren();
 	friendScoresPanel.classList.remove("has-items");
 	friendScoresPanel.classList.add("is-loading");
@@ -474,10 +519,12 @@ async function refreshMapFriendScores() {
 			friendsRelationCache = fetched;
 			return fetched;
 		})();
-		const [leaderboards, friends] = await Promise.all([
+		const [leaderboards, friends, selfProfile] = await Promise.all([
 			fetchBLLeaderboardsByHash(hash),
 			friendsPromise,
+			fetchBeatLeaderPlayer(playerId),
 		]);
+		const myBeatLeaderId = selfProfile?.id ?? playerId;
 		if (requestId !== friendScoreRequestId) return;
 		if (leaderboards.length === 0) {
 			clearFriendScores("No BeatLeader leaderboards found");
@@ -501,6 +548,15 @@ async function refreshMapFriendScores() {
 		}
 		const scores = await fetchAllMapScoresByHash(hash, forPlayMode);
 		if (requestId !== friendScoreRequestId) return;
+		let playerPbAcc: number | null = null;
+		for (const score of scores) {
+			const scorePlayerId = score.playerId ?? (typeof score.player === "object" ? score.player?.id : null);
+			const playerKey = scorePlayerId == null ? "" : String(scorePlayerId);
+			if (!playerKey || playerKey !== String(myBeatLeaderId)) continue;
+			const acc = normalizeAccuracy(score.accuracy ?? score.acc);
+			if (acc === null) continue;
+			if (playerPbAcc === null || acc > playerPbAcc) playerPbAcc = acc;
+		}
 		const bestByPlayer = new Map<string, { name: string; acc: number; avatar: string | null }>();
 		for (const score of scores) {
 			const scorePlayerId = score.playerId ?? (typeof score.player === "object" ? score.player?.id : null);
@@ -523,6 +579,10 @@ async function refreshMapFriendScores() {
 				});
 			}
 		}
+		if (playerPbAcc !== null) {
+			bestByPlayer.delete(String(myBeatLeaderId));
+		}
+		applyPersonalBestRow(playerPbAcc);
 		const sorted = Array.from(bestByPlayer.values()).sort((a, b) => b.acc - a.acc);
 		renderFriendScores(sorted);
 	} catch {