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9/3/2013 8:54 P.M. ET

Flynn will be thinking of dad during Majors debut

CHICAGO -- Brian Flynn will make his Major League debut on Wednesday afternoon against the Cubs, and when he takes the mound, he will be thinking of his late father, David.

"My dad passed away when I was eight," Flynn said. "… It's kind of a dream me and my dad had. [We were] always out there in the backyard. He lived and breathed baseball."

The 23-year-old left-hander was called up on Tuesday from Triple-A New Orleans, after posting a 2.63 ERA (47 ER in 161 IP) in 27 starts between New Orleans and Double-A Jacksonville.

Flynn said that after getting an invitation to Spring Training with the Marlins, he wondered if he would get his first callup in 2013.

"I had a pretty good year and everything, and you hope when you get a big league invite to camp [that your debut] comes around this year. … I was really hoping to make it happen this year and get my feet wet at the end of the season."

Flynn will get that opportunity in a ballpark that he has always admired.

"To find out it was [going to be at Wrigley Field] was even better," he said. "It's a great ballpark, a historic ballpark, and I'm a real big fan of baseball, so it's one of those things that I couldn't ask for more."

Flynn credits his mother, Michele, with helping him find the right coaching growing up after his father passed away following a car accident.

"It was pretty much Mom trying to find me good coaches," Flynn said. "Mom [was] always trying to find me the right pitching lessons. … just always supported [my dream] and kept it going."

Flynn said Wednesday will be a day he won't forget, but not only because he'll be throwing his first pitch in the Majors.

"[I'll] absolutely [be thinking about my dad]," he said. "It'll be a good day. I want to make the most of it, enjoy every aspect of it, and soak it all in."

Brantly returns to Marlins with simplified approach

CHICAGO -- Catcher Rob Brantly was called up from Triple-A New Orleans on Tuesday and said he's ready to show what he can do in the last month of the season.

The Marlins' Opening Day catcher, Brantly hit .290 (29-for-100) in 31 games for Miami in 2012, but struggled in 2013, hitting .225 (46-for-204) in 59 games before being sent to Triple-A.

With New Orleans, Brantly hit .186 (13-for-70) in 20 games.

"The biggest problem I had at the beginning of the season was I was trying to do too much," Brantly said. "I started overthinking every aspect of the game, [and that] affected my hitting and affected my defense."

Brantly said that he used his time in Triple-A to remedy that problem.

"The biggest thing that I worked on when I got sent down was to simplify my approach," he said. "And it doesn't change when you get back up here. It's got to be the same here as it was there."

Marlins manager Mike Redmond said he's glad that Brantly figured out what was causing him to struggle earlier this season, and looks forward to seeing what he can do in the next few weeks.

"I hope he just goes out and plays," Redmond said. "Last year, I wasn't here, but from what I've heard, he came up and swung the bat well. This year, he had a tough time getting going on both sides of the ball, defense and on offense.

"I like the fact that he realized what was going on -- the adjustments that you need to make -- and that's what we're looking for. We send guys down for them to make adjustments, so that when they come back to the big leagues … they're able to sort of figure it out."

Worth noting

• In addition to recalling Brantly, pitchers Arquimedes Caminero and Brad Hand, and selecting Flynn's contract, the Marlins designated first baseman/left-fielder Jordan Brown for assignment.

Brown was 3-for-15 (.200) in 14 games for Miami this season.

Chris Coghlan made his first career start at third base in Tuesday's game against the Cubs. Redmond said September is a good time to try out new positions for certain players, and Coghlan is one of them, especially since the Marlins have so many outfielders.

"We know what [Coghlan] can do in the outfield," Redmond said. " … I think his value is going to be in his flexibility, in his ability to play the infield and being able to play the outfield. … We need the offense, and right now, at this point, I've said it all year: if you hit, you're going to play, and we'll find a spot for you."

• Right-hander Henderson Alvarez, who came out of Monday's 4-3 win over the Cubs in the seventh inning due to tightness in his right hamstring, said he felt fine on Tuesday.

"He says he's fine," said Redmond. "I think the hamstring just tightened up on him a little bit, but he said he was fine and good to go. He went out and ran, played catch and did all his work [Tuesday]."

Manny Randhawa is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.