use id_str

app/Http/Controllers/TeamController.php

@@ -99,7 +99,7 @@ class TeamController extends Controller
             $player = Player::where('twitter_user_id', $profile->id_str)->first();
             if(!$player) {
                 $player = new Player;
-                $player->twitter_user_id = $profile->id;
+                $player->twitter_user_id = $profile->id_str;
             }
             $player->team_id = $request->input('team');
             $player->name = $profile->name;