some sad news ahead of the Miami open with Arena sabinka partner Constantine colov a former hockey player an ex- hockey player and a current coach of a Russian Club has sadly passed away and we have confirmation of that from the club that he coaches let's go over re and this is what the club had to say it is with deep sorrow that we inform you that civat you love coach Constantine colov has passed away he was a strong and cheerful person he was loved and respected by players