US Open: Big-hitting Sam Querrey downs Mischa Zverev to enter quarters

He might benefit from picking Nadal's brains prior to his semi-final match on Thursday, when he will face his stiffest challenge yet in either 17th-seeded American Sam Querrey or powerful South African Kevin Anderson. In the second set, Querrey had a 6-1 lead in the tiebreaker before finally closing it out on his eighth set point at 11-9.

Pablo Carreno Busta reached his first career major semifinal Tuesday, beating No. 29 Diego Schwartzman of Argentina 6-4, 6-4, 6-2.

The Johannesburg-born Anderson last came close to reaching this stage after a quarter-final run at the US Open in 2015. Anderson, who will face Pablo Carreno Busta of Spain in the semifinals, hit 22 aces and had eight service winners against Querrey.

Anderson, the 28th seed came back from 2-5 in the first set tiebreak to win it, and nearly came back in the second set tiebreak from 1-6 down. "I know it's tough for people to stay, but the people that stayed, they were in it".

"But at the same time", he said a few minutes later at the postmatch news conference, "I'm still in this tournament and I feel like I have another opportunity to go one step further". "I feel like that's where I was able to reset".

The 31-year-old, who is the first South African man or woman to reach the semi-finals at the US Open in the Open era, romped through the third set and held his nerve in the fourth to win the tie-break 9-7, saving a set point.

Anderson was keen to savour his achievement before focusing on that challenge, saying: 'This is very special for me, I'm going to try to enjoy it a little bit.

The softly-spoken 12th seed has yet to drop a set in the tournament having benefited from a kind draw.

Querrey, on whether being the Great American Hope weighed on him, said: "No, never thought about that". I know that bottom half of the draw was open, but you can't say 63 guys blew an opportunity. The impetus behind starting Realife Tennis was what the four (Kevin's wife Kelsey Anderson, Brian Lutz and G.D. Jones are the others) called a frustration with "the way top players are notoriously secretive of their training methods". "Only one guy can go through, and Kevin's pretty tough".

  • Stacy Allen