Iga Swiatek continued her incredible run at Roland Garros as she reached the semi-finals with a straight-sets win over qualifier Martina Trevisan. The 19-year-old, who thrashed top seed Simona Halep in the previous round, proved too strong for Trevisan as she won 6-3, 6-1 in an hour and 18 minutes. Swiatek, who is yet to drop a set, will now face another qualifier, Nadia Podoroska, for a place in the final. The Polish teenager should start as favourite for that contest given her impressive form so far. She has only dropped 20 games in five matches and her powerful hitting proved too much for Trevisan, who upset fifth seed Kiki Bertens in the previous round. With both players taking part in their first Grand Slam quarter-final, and having to wait for the conclusion of the marathon match between Dominic Thiem and Diego Schwartzman, it was little surprise that the start of the contest was scrappy. Trevisan broke in the opening game and was striking the ball cleaner as she moved 3-1 ahead. But Swiatek started to find her range, particularly on her powerful forehand, and turned the set around by winning four games in a row. Trevisan, who hadnвЂ™t won a main-draw match at a Grand Slam before this tournament, had two chances to break back at 5-3 but failed to convert. Swiatek took her third set point and then won the opening three games of the second set to establish firm control of the match. A break in the fourth game gave Trevisan hope of staying in the contest but she couldnвЂ™t stay with Swiatek as she continued to control rallies and eventually wrapped up the match.