Margot was among the game's top rookies when he injured his calf while breaking hard on a fly ball in New York. He was hitting .259/.305/.389 entering play Tuesday night. In his first game back, Margot was inserted into the leadoff spot, where he has spent most of his time this season.
"It wasn't something I was expecting," Margot said of the injury. "When you're healthy, you're able to keep going after it every day, and you're able to keep going. When you have an injury that affects you, it's definitely frustrating. In terms of being back here, I'm definitely excited. I'm 100 percent and ready to give it my best."
Going forward, there are no restrictions on Margot, who played five rehab games with Triple-A El Paso. Padres manager Andy Green noted that the center field job is Margot's, meaning Franchy Cordero will slide into the corner outfield spots, while occasionally spelling Margot against tough right-handers.
"Manny's a big part of this team," Green said. "We've struggled for offense here, recently, especially against left-handed pitching. And he's a guy that's handled lefties well."
The Padres will have a decision to make when d'Arnaud returns. Cordero seems the likeliest candidate to be sent down, given that the Padres have spoken about his need for everyday at-bats.
As for Margot, he was asked for a self-evaluation of his first two months in the big leagues.
"So far, for a rookie, it's been pretty good," Margot said. "This is a level where you have to be constantly focused, physically and mentally. You can't let up, in that regard. You have to always be on and be focused and thinking about baseball. You can't have too much stuff going on in your head. I think I was doing that up until the injury."
• Righty reliever Carter Capps was called for two illegal pitches in Sunday's game for Triple-A El Paso and was later ejected for arguing the call. During the offseason Major League Baseball updated its rulebook to alter the definition of a legal delivery -- a bylaw that appeared to be directed at Capps, whose quirky motion includes a hop-step forward. The new rule prohibits pitchers from resetting their pivot foot. For most of the season, Capps' delivery was ruled legal. It is unclear why Sunday's game was called differently, and the Padres have asked MLB for clarification.
• The Padres inaugural blood drive on Tuesday afternoon proved massively successful, as a slew of donors turned out beyond center field at Petco Park. The event filled all available donor slots.
• Right-hander Miguel Diaz will not require an MRI to evaluate his right forearm tightness, as team doctors have informed the Padres they don't believe there is any ligament damage in his elbow. Diaz has been temporarily shut down, but he could begin throwing some time early next month.