Piotr Szczerek, a millionaire businessman from Poland, has apologised to a young tennis fan after snatching from the boy a souvenir cap from Kamil Majchrzak
Carlos Alcaraz sparkled as he reached the quarter-finals, Jessica Pegula advanced too and Barbora Krejcikova escaped to victory against Taylor Townsend
Alcaraz defeated Rinderknech 7-6 (3), 6-3, 6-4 to reach the last eight at Flushing Meadows, while Jessica Pegula beat Ann Li to book a quarter-final slot