Eight-seed Juan Martin del Potro managed to win the all-infirmary Wimbledon quarterfinal matchup against No. 4 David Ferrer in straight sets despite hyperextending his knee in the opening game on Wednesday.
Del Potro lunged to his left to return a shot along the baseline, slipped on the treacherous All England Club grass and keeled over in pain before a doctor came out to assist him.
The Argentinian overcame that early scare to defeat 5-foot-9 David Ferrer 6-2, 6-4, 7-6. His semifinal opponent will be top-seeded Novak Djokovic, who owns a career 8-3 record over del Potro.
Del Potro said he very nearly conceded the match following the fall.
"It's going to be dangerous if I don't recover in the next few days," Del Potro said to the BBC. "I was really close to pulling out. I felt a lot of pain, but the doctors gave me some massive pills."
Meanwhile, Ferrer, always a scrappy opponent, was dealing with his own ailments. The Spaniard has reportedly been receiving pain-killing injections in his ankle just to allow him to play.
But del Potro's powerful, well-placed returns eventually buried Ferrer, who had trailed at some point in each of his two previous rounds at Wimbledon.
Del Potro had just half as many unforced errors (11) as did his counterpart, and his average first-serve speed (119 mph) was significantly faster than that of Ferrer's (112).
Janowicz makes history for Poland
Jerzy Janowicz became the first Polish man to reach a Grand Slam semifinal when he handled countryman Lukasz Kobot in straight sets on Wednesday.
The 6-8 Janowicz, who will face local favorite Andy Murray on Friday, delivered 30 aces in his 7-5, 6-4, 6-4 win. The 22-year-old won 90 percent of the points on his first serve, with one serve clocked at 140 mph.
This is Janowicz's second Wimbledon; he reached the third round last year.
After the match, Janowicz and Kobot hugged and then swapped shirts, according to the Daily Mail.