Lleyton Hewitt keeps winning at Queen's Lleyton Hewitt on his way to a third-round truimph against American Sam Querrey and a match-up against either Juan Martin del Potro or Britain's Dan Evans. LLEYTON Hewitt continued his impressive run at Queen's Club after fighting back to beat big-serving American Sam Querrey and reach the quarter-finals. Hewitt, a four-time champion at the grass court event, upset the tournament's sixth seed 5-7 6-3 6-4 on Thursday. The 32-year-old will face either Argentine third seed Juan Martin del Potro or British wild card Daniel Evans in the last eight. It is the deepest 82nd-ranked Hewitt has gone into a tournament this year and the veteran is building valuable confidence and match practice leading into Wimbledon, where he is the 2002 champion. Following on from his impressive second round win over Bulgarian Grigor Dimitrov, Hewitt started strongly against world No.19 Querrey, the 2010 Queen's champion. Hewitt missed a golden chance to clinch the first set at 5-4 up, wasting three set points on Querrey's serve including missing an open forehand down the line after an epic rally. The American capitalised, holding serve before breaking in the next game and going on to win the set. Hewitt battled back strongly though, breaking serve midway through the second set and surviving an almighty struggle to serve it out. He remained on top and broke again to lead 3-2 in the deciding set and fended off two break points in the final game before converting his fourth match point. Australian Marinko Matosevic was due to face top seed Andy Murray last night, after the Scot completed a 6-3 7-6 (7-4) victory over Frenchman Nicolas Mahut.