Rafael Nadal steps into the semifinals. (EDDIE KEOGH / REUTERS)

For a guy who was hobbled by a foot injury and had to have an MRI on Tuesday, Rafael Nadal pretty nimbly disposed of Mardy Fish in a Wimbledon quarterfinal today.

For Nadal, the defending champion at Wimbledon, the victory was, impressively, his 12th straight in a Grand Slam match and his 19th straight at the All England Club.

There were two chief topics of conversation after his match, though: the condition of his foot and Jo-Wilfried Tsonga’s victory over Roger Federer, Nadal’s familiar nemesis in an upset that may have said more about Tsonga than Federer.

“Today it was better,” Nadal said of his foot. “The treatment worked. I’m fine. I am here. The previous match was tough for me because at that moment I didn’t know if I had a serious injury, but since it’s nothing important, with anti-inflammatories and these things it’s probably going to work.”

Nadal, 31-2 at Wimbledon since 2006, will see Andy Murray, who beat Feliciano Lopez 6-3, 6-3, 6-4 across the net in a semifinal. There’ll be no reprise of a Federer-Nadal final, a la the French Open.

“Roger was playing fantastic,” Nadal said. “I’m sorry for him because I think he deserved to be in the semifinals, winning two sets to love at the beginning and playing fantastic tennis. Tsonga is always a danger ... his serve is always unbelievable. A few mistakes on your serve and probably you’re going to be out of the tournament and probably that’s what happened here.”