Fourth seed Dominic Thiem said on Monday he had "forgotten" the bizarre row over him being booted out of his own press conference so that Roland Garros organisers could accommodate Serena Williams.

Last year's runner-up put the incident behind him to beat the dangerous Gael Monfils 6-4, 6-4, 6-2 on a packed Court Philippe Chatrier to set up a French Open quarter-final against either 10th-seeded Russian Karen Khachanov or two-time semi-finalist Juan Martin del Potro.