diff --git a/modules/arena/api_challenge.go b/modules/arena/api_challenge.go
index ce04c9197..19f8fad13 100644
--- a/modules/arena/api_challenge.go
+++ b/modules/arena/api_challenge.go
@@ -125,6 +125,8 @@ func (this *apiComp) Challenge(session comm.IUserSession, req *pb.ArenaChallenge
 			}
 			return
 		}
+		bule.Integral = red.Integral
+		bule.Dan = red.Dan
 	}
 	redplay := &pb.ArenaPlayer{
 		Uinfo:    red.Uinfo,