The quarter-finals of the Three Rivers Capital Pittsburgh Open saw the seedings go to plan as Hong Kong duo Max Lee and Tsz Fung Yip along with Wales Joel Makin and England’s Ben Coleman reach the next round.
World No.51 Coleman was the only non-seeded player to reach the semi-finals after he saw off United States World No.50 Todd Harrity in straight games to set up a next round clash against fellow Brit Makin.
Makin avoided an upset against Egyptian qualifier Karim El Hammamy – who had defeated tournament top seed Alan Clyne in the previous round – as he completed victory by an 11-7, 7-11, 11-4, 11-7 scoreline in 73 minutes.
Meanwhile, Hong Kong pair Fung Yip and Lee set up a semi-final clash as they completed wins against wildcard Alister Walker and England’s Nathan Lake, respectively.
Fung Yip was forced to work hard against World No.141 Walker – who knocked out New Zealand’s Campbell Grayson in round one – as he came from a game behind to complete a gruelling five-game victory by an 8-11, 11-9, 9-11, 11-3, 14-12 margin.
Second seed Lee, meanwhile, completed a comfortable straight-games victory against Lake by an 11-8, 11-7, 11-8 scoreline.
Results – Quarter-finals
 Joel Makin (WAL) bt [Q] Karim El Hammamy (EGY) 3-1: 11-7, 7-11, 11-4, 11-7 (73m)
Ben Coleman (ENG) bt  Todd Harrity 3-0: 11-8, 11-7, 12-10 (57m)
 Tsz Fung Yip (HKG) bt [WC] Alister Walker (BOT) 3-2: 8-11, 11-9, 9-11, 11-3, 14-12 (67m)
 Max Lee (HKG) bt  Nathan Lake (ENG) 3-0: 11-8, 11-7, 11-8 (42m)
Draw – Semi-finals
 Joel Makin (WAL) v Ben Coleman (ENG)
 Tsz Fung Yip (HKG) v  Max Lee (HKG)