Belgian Elise Mertens sent American third seed Jessica Pegula crashing out of the French Open with a comprehensive victory in the Last 32 on Friday. 

The 28th seed cruised to a 6-1, 6-3 victory on Court Philippe Chatrier to reach the fourth round for the third time. World No. 3 Pegula, who only has two WTA Tour titles to her name, has still never passed the quarter-final stage of a Grand Slam tournament.