US Open Statement on Chair Umpire Mohamed Lahyani After a comprehensive review conducted by US Open officials, including US Open Tournament Director David Brewer, Tournament Referee Brian Earley and others,  the US Open determined that chair umpire Mohamed Lahyani’s conduct during Thursday’s second-round match involving Nick Kyrgios and Pierre-Hugues Herbert went beyond … [Read more...] about US Open Statement on Chair Umpire Mohamed Lahyani