American doubles player Mike Bryan was fined $10,000 by the US Open on Sunday for his using racquet his to make a shooting gesture at a line judge. Bryan, playing alongside twin brother Bob, held his racquet upside down and pointed it towards the official after successfully challenging an incorrect call. Chair umpire Mariana Alves issued a code violation against Mike Bryan for unsportsmanlike conduct. The Bryan brothers, winners of 16 Grand Slam doubles titles as a team, went on to win the second-round match 4-6, 7-5, 6-3 against Roberto Carballes Baena of Spain and Argentina’s Federico Delbonis. It is the highest fine received by a male player so far at this year’s tournament.