diff --git a/svc/api/spec.ts b/svc/api/spec.ts
index 4aa0c301a..eb5ad3c83 100644
--- a/svc/api/spec.ts
+++ b/svc/api/spec.ts
@@ -1430,6 +1430,17 @@ You can use the API without a key, but registering for a key allows increased ra
               type: "integer",
             },
           },
+          {
+            name: "role",
+            in: "query",
+            description:
+              "Benchmark against cores or supports only, estimated from farm within each team. Can be combined with bracket. Omit for all roles",
+            required: false,
+            schema: {
+              type: "string",
+              enum: ["core", "support"],
+            },
+          },
         ],
         responses: {
           200: {
@@ -1457,7 +1468,20 @@ You can use the API without a key, but registering for a key allows increased ra
                 .json({ error: "bracket must be an integer between 1 and 8" });
             }
           }
-          const result = await getHeroBenchmarks(req.query.hero_id, bracket);
+          let role: string | null = null;
+          if (req.query.role !== undefined) {
+            role = String(req.query.role);
+            if (role !== "core" && role !== "support") {
+              return res
+                .status(400)
+                .json({ error: "role must be core or support" });
+            }
+          }
+          const result = await getHeroBenchmarks(
+            req.query.hero_id,
+            bracket,
+            role,
+          );
           return res.json(result);
         },
       },
diff --git a/svc/counts.ts b/svc/counts.ts
index d6c6d6269..cbfc4ce44 100644
--- a/svc/counts.ts
+++ b/svc/counts.ts
@@ -213,6 +213,23 @@ runReliableQueue("counts", 2, async (job: CountsJob, metadata) => {
       const turbo = isTurbo(match);
       // 1 to 8 based on the average rank of the match, as in updateHeroCounts
       const rank = !turbo && avg ? Math.floor(avg / 10) : null;
+      // Rank each team by gold_per_min and call the top 3 cores, the rest
+      // supports. The exact 1-5 position needs parsed data, but this split is
+      // right for 99.4% of players using api data alone (see #2980).
+      const roles = new Map<number, string>();
+      if (!turbo) {
+        [true, false].forEach((radiant) => {
+          const team = match.players.filter((p) => isRadiant(p) === radiant);
+          if (team.length === 5) {
+            team
+              .slice()
+              .sort((a, b) => (b.gold_per_min ?? 0) - (a.gold_per_min ?? 0))
+              .forEach((p, i) =>
+                roles.set(p.player_slot, i < 3 ? "core" : "support"),
+              );
+          }
+        });
+      }
       if (
         match.match_id % 100 < Number(config.BENCHMARKS_SAMPLE_PERCENT) &&
         (isSignificant(match) || turbo)
@@ -244,10 +261,23 @@ runReliableQueue("counts", 2, async (job: CountsJob, metadata) => {
                   2,
                 );
                 redis.expireat(rkey, expiretime);
+                // Filtered sets keep both slots so every key has the same
+                // shape, with an empty segment for the filter not in use.
+                const role = roles.get(p.player_slot);
+                if (role) {
+                  const roleKey = `${rkey}::${role}`;
+                  redis.zadd(roleKey, metric, match.match_id);
+                  redis.expireat(roleKey, expiretime);
+                }
                 if (rank) {
-                  const rankKey = `${rkey}:${rank}`;
+                  const rankKey = `${rkey}:${rank}:`;
                   redis.zadd(rankKey, metric, match.match_id);
                   redis.expireat(rankKey, expiretime);
+                  if (role) {
+                    const rankRoleKey = `${rkey}:${rank}:${role}`;
+                    redis.zadd(rankRoleKey, metric, match.match_id);
+                    redis.expireat(rankRoleKey, expiretime);
+                  }
                 }
               }
             });
diff --git a/svc/util/queries.ts b/svc/util/queries.ts
index 8da05a341..c337df06a 100644
--- a/svc/util/queries.ts
+++ b/svc/util/queries.ts
@@ -108,11 +108,22 @@ export async function getHeroItemPopularity(heroId: string) {
     late_game_items: lateGameItems,
   };
 }
-export async function getHeroBenchmarks(heroId: string, bracket?: number | null) {
+export async function getHeroBenchmarks(
+  heroId: string,
+  bracket?: number | null,
+  role?: string | null,
+) {
   const ret: AnyDict = {};
   const arr = [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.95, 0.99];
-  // Bracketed sets add the 1-8 rank bracket after the global/turbo slot
-  const suffix = bracket ? `:${bracket}` : "";
+  // Key slots are benchmarks:<epoch>:<metric>:<hero>:<turbo>:<bracket>:<role>
+  // Filtered sets always carry both the bracket and role slots, empty for the
+  // ones not in use, and are only written for non-turbo matches:
+  // ...:<hero>::5:  ...:<hero>:::core  ...:<hero>::5:core
+  // The unfiltered key keeps no suffix at all so existing ones still resolve.
+  let suffix = "";
+  if (bracket || role) {
+    suffix = `:${bracket ?? ""}:${role ?? ""}`;
+  }
   const items: [metric: string, percentile: number][] = [];
   Object.keys(benchmarks).forEach((metric) => {
     arr.forEach((percentile) => {