# Tennis: Wimbledon was forced to apologise for a controversy on Centre Court during the first tournament since the abolishment of line judges. The electronic line calling system apparently went down during the round of 16 match between Anastasia Pavlyuchenkova from Russia and local player Sonay Kartal. German umpire Nico Helwerth was criticised for not overruling when a ball missed the line by a wide margin, but wasn’t called out. The Russian won in straight sets. Helwerth wasn’t appointed to officiate a match yesterday.
Tennis: Wimbledon apologises for technical glitch