Peralta made just one relief appearance with Milwaukee earlier this year before he was optioned to Triple-A -- he allowed one run on three hits in an inning of work against Colorado on April 22. But the outing marked his first and only relief appearance of the year, and first since 2010 with Class A Brevard County.
"I'm very excited. I've been starting; that's what I've done my whole career in the Minor Leagues," said Peralta, who will start in place of Mark Rodgers. "First time I came up out of the bullpen, I was feeling weird, but now I feel like I'm on my normal routine and I'm just trying to do the best I can."
Peralta was 7-11 with a 4.66 ERA in 28 starts with Triple-A Nashville this season.
"The first time you're just trying to impress when you go out there. Now I'm feeling more comfortable and I'm not trying to do too much, just do the same thing I've been doing in the Minor Leagues," the pitcher said. "I know I feel much more comfortable now."
Marlins starter Nathan Eovaldi, though not a September callup, is in a similar boat.
Eovaldi will make his eighth start for the Marlins since being traded from the Dodgers in late July, but he is still pitching for a spot in next year's rotation. He is 3-4 with a 5.03 ERA in seven starts with Miami, though his longest outing came his last time out, when he threw seven innings of three-run ball against the Mets.
"It was really just mentally going out there and trying not to do too much," Eovaldi said. "Knowing that good is good enough. Trust yourself and go out there and attack."
Eovaldi took a tough-luck loss as Mets starter R.A. Dickey threw a shutout, but he demonstrated good command -- he scattered just four hits and walked only one batter.
"I really had command of all of my pitches," Eovaldi said. "I was just trying to go out there and not do too much. Be relaxed and attack the strike zone."
Brewers: Working on the rotation
The Brewers called up a pair of right-handers from Triple-A Nashville on Tuesday, but manager Ron Roenicke still isn't sure how he'll consistently work them into the rotation.
Roenicke said on Tuesday that he wants both callups -- Peralta and Tyler Thornburg -- to get multiple starts before the end of the season.
The Brewers have one vacancy in their rotation after Rodgers was shut down for the season, and Peralta will pitch in his place on Wednesday. Roenicke said it's possible that Peralta and Thornburg may alternate every other start in the open slot, but said a move to a six-man rotation is also a possibility.
"We want to be fair to both of them, so maybe the next start maybe it's Thornburg's time, so I don't know," Roenicke said. "We're trying to work that out. We want to see all those young guys and try to figure out how to do it."
Marlins: Lee handles first base
Carlos Lee wants to prove that he can play for any team next season, not just one in the American League.
Since the Marlins acquired Lee from Houston on July 4, the slugger has played exclusively at first base and has done so pretty well. Through his first 54 games with Miami, Lee boasted a .966 fielding percentage.
"That's an idea I want to change," Lee said about potentially being signed as a DH next season. "I want to prove to people that I can field. It's something I take a lot of pride in. I'm pretty happy with the way I've played on the field."
With Ryan Braun's first-inning RBI double, the Brewers now have an extra-base hit in 74 straight games.
Marlins left fielder Justin Ruggiano finished 1-for-4 on Tuesday, and is now 7-for-16 against Milwaukee this season. Ruggiano hit three homers and six RBIs in the teams' four-game set in early July.
"Hitters go through phases of being locked in and being uncomfortable," Ruggiano said. "You see it all the time. One week a guy can be on fire, the next week he can be absolutely cold. I think it might have been one of those weeks for me where I was kind of locked in. I was comfortable with what I was doing. My body felt good."