SAN FRANCISCO -- The Padres' bullpen got a boost with the return of Huston Street on Friday, with the All-Star closer getting activated from the disabled list.

Street had been sidelined since Aug. 11 with a left calf strain and returned with a 21 1/3-inning scoreless streak that spans 22 outings since June 20. Street has only allowed three hits over that stretch.

"It fortifies a bullpen that has pitched pretty well in the second half," manager Bud Black said. "If you look at the overall numbers in the bullpen and some individual performances by guys, a lot of guys have really contributed to our second-half success."

Street's delayed return comes after a setback in the beginning of the month when he experienced soreness in the calf from running sprints. Street had missed 29 games earlier in the season with a strained right lat muscle. He entered Friday with 21 saves on the year, and his next one would be the 200th of his career.

"It's good to get him back in the mix," Black said Friday. "Hopefully we can use him tonight."

Quentin improved, though not in starting lineup

SAN FRANCISCO -- Carlos Quentin was out of the lineup Friday for the second straight game as he continued to have soreness with his surgically repaired right knee.

The slugger returned to the lineup Wednesday after sitting six games to rest the knee, but experienced problems with it during the game. Jesus Guzman got the start in left field against the Giants on Friday.

"He's doing better and he's available tonight," manager Bud Black said Friday. "Not in the lineup, but you could see him off the bench."

Quentin had arthroscopic surgery on the knee in March and has had irritation with it in the last few weeks. Entering Friday, the 30-year-old was batting .263 with 16 home runs and 45 RBIs in 81 games this season after missing the first 49 games of the season as he recovered from the knee surgery.