diff --git a/src/idz/db/timeAttack.ts b/src/idz/db/timeAttack.ts
index ef124c2..6a8a35f 100644
--- a/src/idz/db/timeAttack.ts
+++ b/src/idz/db/timeAttack.ts
@@ -11,12 +11,16 @@ import { generateId } from "../../db";
 export class SqlTimeAttackRepository implements TimeAttackRepository {
   constructor(private readonly _conn: ClientBase) {}
 
-  async loadTopTen(routeNo: RouteNo): Promise<TopTenResult[]> {
+  async loadTopTen(
+    routeNo: RouteNo,
+    minTimestamp: Date
+  ): Promise<TopTenResult[]> {
     const loadSql = sql
       .select("p.name", "ta.*")
       .from("idz.ta_best ta")
       .join("idz.profile p", { "ta.profile_id": "p.id" })
       .where("ta.route_no", routeNo)
+      .where(sql.gt("ta.timestamp", minTimestamp))
       .orderBy(["ta.total_time asc", "ta.timestamp asc"])
       .limit(10)
       .toParams();
diff --git a/src/idz/decoder/loadTopTen1.ts b/src/idz/decoder/loadTopTen1.ts
index 0f9dd83..cfe9e5c 100644
--- a/src/idz/decoder/loadTopTen1.ts
+++ b/src/idz/decoder/loadTopTen1.ts
@@ -16,7 +16,7 @@ export function loadTopTen1(buf: Buffer): LoadTopTenRequest {
   for (let i = 0; i < 32; i++) {
     selectors.push({
       routeNo: (buf.readUInt16LE(0x0004 + 2 * i) >> 1) as RouteNo,
-      field_44: buf.readUInt32LE(0x0044 + 4 * i),
+      minTimestamp: new Date(buf.readUInt32LE(0x0044 + 4 * i) * 1000 + 1000),
     });
   }
 
diff --git a/src/idz/decoder/loadTopTen2.ts b/src/idz/decoder/loadTopTen2.ts
index 53fe059..79e9341 100644
--- a/src/idz/decoder/loadTopTen2.ts
+++ b/src/idz/decoder/loadTopTen2.ts
@@ -16,7 +16,7 @@ export function loadTopTen2(buf: Buffer): LoadTopTenRequest {
   for (let i = 0; i < 40; i++) {
     selectors.push({
       routeNo: (buf.readUInt16LE(0x0004 + 2 * i) >> 1) as RouteNo,
-      field_44: buf.readUInt32LE(0x0054 + 4 * i),
+      minTimestamp: new Date(buf.readUInt32LE(0x0054 + 4 * i) * 1000 + 1000),
     });
   }
 
diff --git a/src/idz/handler/loadTopTen.ts b/src/idz/handler/loadTopTen.ts
index 8405ce6..a0f65d2 100644
--- a/src/idz/handler/loadTopTen.ts
+++ b/src/idz/handler/loadTopTen.ts
@@ -4,7 +4,7 @@ import {
   LoadTopTenResponseCourse,
   LoadTopTenResponseRow,
 } from "../response/loadTopTen";
-import { Repositories } from "../repo";
+import { Repositories, TopTenResult } from "../repo";
 
 export async function loadTopTen(
   w: Repositories,
@@ -17,12 +17,19 @@ export async function loadTopTen(
       break;
     }
 
-    if (selector.field_44 === 0) {
+    const { routeNo, minTimestamp } = selector;
+    let src: TopTenResult[];
+
+    if (req.teamId !== undefined) {
+      src = []; // TODO
+    } else {
+      src = await w.timeAttack().loadTopTen(routeNo, minTimestamp);
+    }
+
+    if (src.length === 0) {
       continue;
     }
 
-    const { routeNo } = selector;
-    const src = await w.timeAttack().loadTopTen(routeNo);
     const dest = new Array<LoadTopTenResponseRow>();
 
     for (const srcItem of src) {
diff --git a/src/idz/repo.ts b/src/idz/repo.ts
index 87197c8..dcf6b8c 100644
--- a/src/idz/repo.ts
+++ b/src/idz/repo.ts
@@ -72,7 +72,10 @@ export interface TopTenResult {
 }
 
 export interface TimeAttackRepository {
-  loadTopTen(routeNo: Model.RouteNo): Promise<TopTenResult[]>;
+  loadTopTen(
+    routeNo: Model.RouteNo,
+    minTimestamp: Date
+  ): Promise<TopTenResult[]>;
 
   loadAll(
     profileId: Model.ExtId<Model.Profile>
diff --git a/src/idz/request/loadTopTen.ts b/src/idz/request/loadTopTen.ts
index cda9abd..29a2fde 100644
--- a/src/idz/request/loadTopTen.ts
+++ b/src/idz/request/loadTopTen.ts
@@ -4,7 +4,7 @@ import { Team } from "../model/team";
 
 export interface LoadTopTenRequestSelector {
   routeNo: RouteNo;
-  field_44: number;
+  minTimestamp: Date;
 }
 
 export interface LoadTopTenRequest {