(Reuters) - A Croatian tennis umpire banned from officiating for 12 months after a corruption inquiry worked as a linesman at last year's U.S. Open because of a "flaw in our system", the United States Tennis Association said on Friday.
Denis Pitner was suspended by the International Tennis Federation in August after sending information about a player to a coach during a tournament and regularly logging on to a betting account from which bets were placed on tennis matches.
"We had a flaw in our system. Denis Pitner did work as a linesman at the 2015 U.