Peavy had a one-hopper off the bat of Mike Morse deflect off his glove and hit his groin area in Sunday's 6-2 loss to the Mariners.
Peavy was fine and said he tossed what might have been his best pitch of the game right afterward.
"I got a ground ball and got out of the inning," Peavy said, smiling.
When he wasn't avoiding balls hit his way, Peavy was working on hitting his spots -- a task that was certainly easier said than done -- in a two-inning stint that saw him allow two runs on four hits.
"I didn't turn it loose by any means, but I let it go enough to feel good," Peavy said. "I just didn't throw many fastballs where I wanted to throw them. I felt real good. I just need to work on fastball command."
Peavy didn't throw any sliders on Sunday but struck out Raul Ibanez looking on a nasty back-door cut fastball. He also mixed in a few changeups, something he's committed to this spring.
"I'm going to use it all through spring. But first and foremost, you've got to locate your fastball," he said. "I want to throw the ball down and away. Once I do that, I can work on other stuff."
Everything but the throw: Chase Headley had no trouble picking the ball up off the bat of Seattle's Brad Wilkerson on Saturday. His approach to the ball in front of him went just fine and he easily fielded the ball in his glove with hopes of throwing a runner out at the plate.
That's when things went awry for Headley, the converted third baseman who is trying to make the team as an outfielder.
"My plant foot went in and I slid," Headley said. "I had no idea where the ball went -- I was flat on my back."
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That led to a throwing error as Headley's throw to the infield sailed wide as a run scored in a game the Padres eventually won, 11-10.
Headley was in good spirits afterward, and not just because he hit a two-run home run and had a two-run double. He said that up until he slipped, everything went smoothly.
"I wouldn't change anything," Headley said. "I felt like I was in good position to throw, came in hard, got it in my glove and slipped. I guess that happens sometimes."
Friar notes: Pitcher Carlos Guevara, out since the first week of Spring Training with a strained hamstring, threw on the side and in batting practice Sunday. The Rule 5 pick could be on the mound in a Cactus League game late next week, Black said. ... It looks as though catcher Robert Fick, a non-roster invitee, will be out of action for 3-4 days after suffering lower back spasms. ... The Padres travel to Maryvale on Monday where they'll face the Brewers. Several Minor League players and non-roster invitees will play in a "B'" game in the morning where Cesar Ramos and Wil Ledezma will each throw three innings. ... Pitcher Justin Germano, who tossed 2 1/3 scoreless innings on Saturday, has toyed with the idea of adding a cut fastball this spring though he hasn't been able to do that yet. He said he'll likely try to do so in his next bullpen session. ... Pitcher Glendon Rusch suffered a right shin contusion after being struck by a ball on Sunday. He left the game as a precaution and is listed as day-to-day. ... Reliever Heath Bell struck out the side in his only inning of work Sunday. ... Headley, the hitting star Saturday, had two more hits Sunday. ... Trevor Hoffman allowed two runs on four hits and got only two outs.
Up next: Chris Young makes his Cactus League debut at 12:05 p.m. Monday against the Brewers in Maryvale. Young, who was 9-8 with a 3.12 ERA in 2007, will throw two innings. Young missed time last season with a lower back injury and a strained oblique.