David Ferrer is still in the running for this year’s Paris Masters title.

The 33-year-old Spanish tennis player, the 2012 champion, followed up by beating 13th-seeded American John Isner 6-3, 6-7 (6), 6-2 in the quarterfinals.

Ferrer, who has won five titles this year, seemed to be cruising when he broke Isner in the eighth game of the second set. That gave him a chance to serve out the match, but from 40-15 his composure deserted him.

“I was waiting for him to make mistakes,” Ferrer said.

Isner forced a tiebreaker, clinching it with a huge forehand that clipped Ferrer’s outstretched racket.

Ferrer was given a warning from the chair umpire at the start of the third set when he yelled out in frustration after missing four consecutive break points.

But he easily took Isner’s next service game, although the American was clearly struggling. At 0-40, he hunched over and then took a medical timeout at the changeover.

“My stomach was just cramping up, so was I some pain,” Isner said.

Ferrer held easily for 3-1 and then broke again when Isner hit a big forehand wide.

Ferrer next faces second-seed Andy Murray in the semifinals.