diff --git a/client/src/pages/DashboardPage.tsx b/client/src/pages/DashboardPage.tsx
index 2973f93..fdfc631 100644
--- a/client/src/pages/DashboardPage.tsx
+++ b/client/src/pages/DashboardPage.tsx
@@ -32,6 +32,13 @@ import {
 } from "../hooks/useSleeper";
 import { usePowerRankings } from "../hooks/usePowerRankings";
 import { getFamilySeasons } from "../utils/leagueFamily";
+import { getProviderLabel } from "../utils/providerLabels";
+import {
+  isSuperflex as isSuperflexLeague,
+  isTightEndPremium,
+  getScoringType,
+  getLeagueFormat,
+} from "../utils/sleeperNormalize";
 import { useMyClaimedTeam } from "../hooks/useMyClaimedTeam";
 import { useMyHuddles } from "../hooks/useHuddles";
 import { Ticker } from "../widgets/dashboard/Ticker";
@@ -128,6 +135,18 @@ export function DashboardPage() {
       ? (leagueSettings["last_scored_leg"] as number)
       : null;
 
+  // Masthead subheading — e.g. "Sleeper 12-team PPR TEP Superflex Dynasty League".
+  const mastheadSubheading = [
+    getProviderLabel(selectedLeague?.ref.provider),
+    leagueSettings["num_teams"] ? `${leagueSettings["num_teams"]}-team` : null,
+    getScoringType(selectedLeague?.scoringSettings ?? {}),
+    isTightEndPremium(selectedLeague?.scoringSettings ?? {}) ? "TEP" : null,
+    isSuperflexLeague(selectedLeague?.rosterPositions ?? []) ? "Superflex" : null,
+    `${getLeagueFormat(leagueSettings)} League`,
+  ]
+    .filter(Boolean)
+    .join(" ");
+
   // Sleeper omits last_scored_leg for pre-draft / drafting leagues, so falling
   // back to playoff_week_start would (incorrectly) advertise weeks 17/18 as
   // navigable. Pin to 0 when the league hasn't kicked off so Scoreboard locks
@@ -251,6 +270,7 @@ export function DashboardPage() {
             leagueName={selectedLeague?.name ?? ""}
             week={week}
             oldestYear={oldestYear}
+            subheading={mastheadSubheading}
           />
 
           <div className="px-3 sm:px-7 pt-4 pb-6 flex-1">
diff --git a/client/src/utils/providerLabels.ts b/client/src/utils/providerLabels.ts
new file mode 100644
index 0000000..9d9a918
--- /dev/null
+++ b/client/src/utils/providerLabels.ts
@@ -0,0 +1,13 @@
+import type { ProviderId } from "../types/fantasy";
+
+// Display copy per provider — not always a naive capitalize (e.g. ESPN is an
+// acronym, not a titlecased word).
+const PROVIDER_LABELS: Record<ProviderId, string> = {
+  sleeper: "Sleeper",
+  espn: "ESPN",
+  yahoo: "Yahoo",
+};
+
+export function getProviderLabel(provider: ProviderId | undefined): string {
+  return provider ? PROVIDER_LABELS[provider] : "";
+}
diff --git a/client/src/utils/sleeperNormalize.ts b/client/src/utils/sleeperNormalize.ts
index 78087b8..e1df855 100644
--- a/client/src/utils/sleeperNormalize.ts
+++ b/client/src/utils/sleeperNormalize.ts
@@ -177,3 +177,54 @@ export function buildDefStatsKeyMap(
 
   return map;
 }
+
+// ── League format ────────────────────────────────────────────────────────────
+
+/**
+ * A league is superflex when its roster_positions include a SUPER_FLEX slot
+ * (a flex spot that can also start a QB), as opposed to a plain FLEX slot.
+ *
+ * @param rosterPositions - League's `rosterPositions` field.
+ */
+export function isSuperflex(rosterPositions: string[]): boolean {
+  return rosterPositions.includes("SUPER_FLEX");
+}
+
+/**
+ * Tight end premium (TEP) leagues award tight ends extra points per
+ * reception on top of the standard `rec` value, via Sleeper's
+ * `bonus_rec_te` scoring key.
+ *
+ * @param scoringSettings - League's `scoringSettings` field.
+ */
+export function isTightEndPremium(scoringSettings: Record<string, number>): boolean {
+  return (scoringSettings["bonus_rec_te"] ?? 0) > 0;
+}
+
+/**
+ * Derive the league's reception scoring format from the `rec` key in
+ * scoring_settings: 1 point/reception is full PPR, 0.5 is half-PPR, and
+ * 0 (or unset) is standard.
+ *
+ * @param scoringSettings - League's `scoringSettings` field.
+ */
+export function getScoringType(scoringSettings: Record<string, number>): string {
+  const rec = scoringSettings["rec"] ?? 0;
+  if (rec >= 1) return "PPR";
+  if (rec > 0) return "Half-PPR";
+  return "Standard";
+}
+
+/**
+ * League format comes from Sleeper's `settings.type` field:
+ * 0 = redraft, 1 = keeper, 2 = dynasty.
+ *
+ * @param settings - League's `settings` field.
+ */
+export function getLeagueFormat(settings: Record<string, unknown>): string {
+  const type = Number(settings["type"] ?? 0);
+  if (type === 3) return "Chopped";
+  if (type === 2) return "Dynasty";
+  if (type === 1) return "Keeper";
+  return "Redraft";
+}
diff --git a/client/src/widgets/dashboard/Masthead.tsx b/client/src/widgets/dashboard/Masthead.tsx
index 9c6a89e..5be38dd 100644
--- a/client/src/widgets/dashboard/Masthead.tsx
+++ b/client/src/widgets/dashboard/Masthead.tsx
@@ -10,15 +10,14 @@
  * Wiring: `oldestYear` and `week` come from `DashboardPage`'s display-week
  * derivation; `leagueName` is the selected league's display name.
  */
-export function Masthead({
-  leagueName,
-  week,
-  oldestYear,
-}: {
+type MastheadProps = {
   leagueName: string;
   week: number;
   oldestYear: string | null;
-}) {
+  subheading?: string;
+};
+
+export function Masthead({ leagueName, week, oldestYear, subheading }: MastheadProps) {
   const now = new Date();
   const dateStr = now.toLocaleDateString("en-US", {
     weekday: "long",
@@ -39,7 +38,7 @@ export function Masthead({
             {leagueName}
           </div>
           <div className="mt-1 font-serif italic text-[13px] text-muted text-center">
-            [PLATFORM] [# OF TEAMS] [FORMAT]
+            {subheading}
           </div>
         </div>
         <div className="text-[11px] text-muted tracking-wide font-sans text-center sm:text-right">
diff --git a/server/src/providers/sleeper/index.ts b/server/src/providers/sleeper/index.ts
index 3c5695f..385cd0a 100644
--- a/server/src/providers/sleeper/index.ts
+++ b/server/src/providers/sleeper/index.ts
@@ -44,6 +44,16 @@ import type {
   SleeperDraftPick,
 } from "../../services/sleeperService.js";
 
+// Sleeper's `settings.type`: 0 = redraft, 1 = keeper, 2 = dynasty, 3 = chopped.
+// Chopped leagues play by different elimination rules we don't support yet,
+// so they're filtered out of league lookup at the import boundary rather
+// than handled (or half-handled) throughout the rest of the app.
+const CHOPPED_LEAGUE_TYPE = 3;
+
+function isChoppedLeague(s: SleeperLeague): boolean {
+  return Number(s.settings?.type) === CHOPPED_LEAGUE_TYPE;
+}
+
 function toLeague(s: SleeperLeague): League {
   return {
     ref: { provider: "sleeper", leagueId: s.league_id },
@@ -253,7 +263,7 @@ export const sleeperProvider: FantasyProvider = {
 
   async getUserLeagues(userId: string, year: string): Promise<League[]> {
     const leagues = await getSleeperLeagues(userId, year);
-    return leagues.map(toLeague);
+    return leagues.filter((l) => !isChoppedLeague(l)).map(toLeague);
   },
 
   async getAllUserLeagues(userId: string): Promise<League[]> {
@@ -273,6 +283,7 @@ export const sleeperProvider: FantasyProvider = {
         seen.add(l.league_id);
         return true;
       })
+      .filter((l) => !isChoppedLeague(l))
       .sort(
         (a, b) =>
           Number(b.season) - Number(a.season) || a.name.localeCompare(b.name),