Medvedev advances to US Open semis as Federer eyes last four

Russia's Daniil Medvedev shook off a leg injury to reach his first Grand Slam semi-final at the US Open by defeating three-time major winner Stan Wawrinka while Roger Federer eyed his 46th Grand Slam semi-final berth.

Fifth seed Medvedev's 7-6 (8/6) 6-3 3-6 6-1 triumph on Tuesday sent him into a Friday matchup against the later winner between Bulgaria's 78th-ranked Grigor Dimitrov and 38-year-old Federer, owner of a record 20 Grand Slam titles.

"I feel really strange about this match but I'm really happy to be in my first semi-final," Medvedev said.

Medvedev struggled with a sore left quadriceps muscle that made him consider quitting the match in the first set.

"Before the match I was feeling perfect. In the first set I think I pulled my quadriceps," Medvedev said.

"I had a really big pain in my quadriceps and thought I wasn't going to continue the match." Medvedev took a medical timeout and had the area taped and took a painkiller.

"In the fourth set, I started feeling the painkiller and started moving better," he said. "For sure I hope to be ready for the semis."
"But again, he's showing last few weeks that anything can happen with him, so for sure he's going to have a shot. He just need two more matches."
"I have to say, sorry guys, and thank you."
- Never found the rhythm -
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"I wasn't at my best today. I wasn't moving great. I didn't mix enough my game, and at the end it was a struggle."