SAN FRANCISCO -- Cy Young Award winner Jake Peavy says that he's clean, even though his hands aren't.

Peavy, who gets the start on Friday in the first matchup of a three-game series against the Dodgers, will likely pitch under a microscope after still photos from his last start against the Dodgers showed a dark substance on his right hand.

Peavy, who allowed a run on two hits with eight strikeouts in earning a complete-game victory over the Dodgers on April 5 at PETCO Park, said that the substance in question is nothing but dirt and rosin.

"It's comical," Peavy said. "When they showed me the picture, I laughed. I've got no foreign substance on my hand -- period. I have got no problem saying that or being checked any time."

Peavy said he frequently uses the rosin bag on the mound during a game because "grip is something we have to worry about. But that's why we have rosin back there; you mix it with dirt during the game and you're blowing on your hand."

As for speculation that he might have doctored the baseball, Peavy, who has won his first two starts of the season, said he can't worry about that, as he knows he has done nothing wrong.

"I really can't control what people have said," Peavy said. "It's a big story in L.A., and I don't have a lot of friends in L.A."

That Peavy tamed the Dodgers should come as no surprise, as he's now 10-1 with a career 2.21 ERA against Los Angeles. Better still, Peavy hasn't lost to the Dodgers since 2003.

Pitching matchup
SD: RHP Jake Peavy (2-0, 0.56 ERA)
The Dodgers likely aren't too keen on seeing Peavy again, not after he earned a complete-game victory on April 5. Peavy allowed just one run on two hits with one walk in a 4-1 complete-game victory over Los Angeles, his first complete game since Sept. 2, 2006. The Padres allowed Peavy to throw 116 pitches because he wasn't too tired and because he'll get an extra day of rest before facing the Dodgers again.

LAD: RHP Brad Penny (1-1, 2.84 ERA)
After an effective and scoreless Opening Day victory, Brad Penny encountered a hiccup against the Padres, allowing five consecutive singles in a 38-pitch first inning. Penny got back on track, blanking San Diego over the next five innings, but the damage was done. He'll be facing the Padres again, this time at home.

Tidbits
Pitcher Clay Hensley, working his way back from offseason shoulder surgery, will throw one inning in a game in extended Spring Training in Arizona on Friday, his first inning against hitters so far. Hensley likely figures somewhere in the Padres' bullpen somewhere down the line, though he will have to prove he's healthy and still have to go out on a Minor League rehabilitation stint with one of their farm teams before returning to the Major Leagues. ... Michael Barrett, who went on the 15-day disabled list on Tuesday with a sprained right calf, will join the team in Los Angeles on Friday for the start of a three-game series against the Dodgers so that he can rehabilitate his elbow with the team training staff. ... The Padres had 13 hits in Tuesday's 3-2 loss in extra innings to the Giants, all singles. ... Chase Headley had his first multi-hit game of the season for Triple-A Portland on Tuesday, going 2-for-4 with an RBI in a 7-1 loss to Sacramento.

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Up next
• Saturday: Padres (Chris Young, 1-0, 2.13) at Dodgers (Derek Lowe, 0-0, 2.25), 7:10 p.m. PT
• Sunday: Padres (Greg Maddux, 1-0, 2.77) at Dodgers (Chad Billingsley, 0-1, 9.64), 1:10 p.m. PT
• Saturday: Off-day