MIAMI -- Matt Dominguez, the Marlins' top prospect according to MLB.com, received his awaited big league callup, but will be eased into a role with the club.

Marlins manager Jack McKeon wanted to give the 22-year-old third baseman the day off Tuesday after hearing about his promotion and travel.

"That's not fair to the kid to put him in a spot," McKeon said. "You try to develop these guys -- not bury them -- and try to pick your spots. I'll get him in there tomorrow or maybe the next day. I want him to get his feet wet tonight. He may go in there for defense like I used [Donnie] Murphy last night. See how the game goes. Maybe I'll run him in there for an at-bat or something."

Of late, Greg Dobbs and Jose Lopez have split time at third base, with the latter starting with a left-hander on the mound.

McKeon said that Dominguez would bat either sixth, seventh or eighth in the lineup.

"Just depends how we're going," McKeon said. "We've got some pretty good hitters hitting low. I always looked at it, if you're one through nine you're all right. Doesn't make any difference where you're at."

Dominguez, who will wear No. 54, called it a dream come true to reach the Majors. He was Florida's 12th overall pick in the 2007 First-year Player Draft.

"Just go out and play well, be myself and have good at-bats and play good defense," Dominguez said.

During the 10th inning of Tuesday night's game, Dominguez made his Major League debut -- getting hit by a pitch on a 1-2 count -- as a pinch-hitter with one out.

Hanley's surgery to be done by top physician

MIAMI -- When Hanley Ramirez undergoes surgery on his left shoulder, it will be performed by one of the best in the business.

Orthopedic surgeon, Dr. James Andrews, will do the procedure on Sept. 15 in Birmingham, Ala.

Ramirez, 27, has been on the disabled list since Aug. 10, retroactive to Aug. 3, with left shoulder instability.

The extent of the damage to the shoulder won't be fully known until the surgery is completed. The Marlins are hopeful their three-time All-Star will be ready for the 2012 opener.

After the 2007 season, Ramirez had surgery to the same shoulder, and he was back for the start of Spring Training.

Ramirez has labored through his roughest season, batting .243 with 10 homers and 45 RBIs in 92 games.

Ramirez injured his shoulder while making a diving attempt on a fly ball to short left field on Aug. 2 against the Mets at Citi Field.

Marlins restructure baseball operations

MIAMI -- Organizational changes have already started for the Marlins, as they look to restructure internally in preparation for next season.

The organization on Tuesday announced three moves within their Baseball Operations department, which will impact their Draft and Minor Leagues.

Marty Scott steps in as vice president of player development, Marlins president of baseball operations Larry Beinfest announced.

Jim Fleming, who had been the vice president of player development and scouting, has been named special assistant to the president of baseball operations.

Stan Meek, who had been the director of scouting, has been named vice president of scouting.

"I think we're in a business that you're never satisfied, that you always have this thirst for players, especially when you're running reasonable payrolls or you have payroll challenges," Beinfest said. "You always need a constant flow of young players, so I don't think that you're ever satisfied. I think that we're realistic in kind of the way our system looks right now."

The Marlins system has certainly produced its share of homegrown talent, including Josh Johnson, Mike Stanton, Logan Morrison and Gaby Sanchez.

But the promotions of Stanton, Morrison and Sanchez last year thinned the overall depth in the organization. In 2009, Chris Coghlan was the National League Rookie of the Year.

"I don't think it's necessarily as 'empty' as everybody portrays it, and Marty's going tomorrow to see our Greensboro team, which is in the playoffs, which we feel has a number of prospects including Christian Yelich and has some good-looking young players," Beinfest said.

"But we did have a hiccup in the sytem a little bit, which we thought partly was natural because of the graduations of the Coghlans, Sanchezes, and Morrisons and Stantons, and we've talked about that from the upper levels, but we need a constant flow."

Scott will oversee player development, while Meek will run the First-Year Player Draft, and Fleming will now work closely with Beinfest.

Scott, who played Minor League ball in the Texas Rangers system, spent the past three seasons as manager of the Lincoln Saltdogs of the Independent American Association. He guided the Saltdogs to the American Association championship in 2009.

Scott has 34 seasons of professional baseball experience, including 10 as the director of player development for the Rangers (1985-1994).

Scott offers an array of experience, ranging from the front office to Minor League managing.

Marlins owner Jeffrey Loria has known Scott for a number of years.

Loria first became involved in professional baseball in 1989 when he purchased the Triple-A Oklahoma City affiliate.

"I knew Jeffrey before he bought the club in Oklahoma City," Scott said. "We kind of developed a relationship and we were fortunate enough to win Triple-A championship there. He's always had a winning attitude, and he encouraged me to come here. I want to win World Series No. 3, four and five. I want to win one. I know that's what his main goal is here."

In 13 seasons of managing experience in the Minors, he won four championships. He's managed in the Rangers (1982-84) and the Mets (2008) organizations. And he was with St. Paul (1995-2000) and Fort Worth (2002).

He also managed Team USA in 2002 and 2003, leading the team during the 2003 World Cup and the qualifying rounds for the Pan-American Games.

In 1977, he was drafted by the Rangers, and he reached Triple-A in 1979 and 1980 as a corner outfielder.

"Obviously, we've had success developing players here," Beinfest said. "We have a core of young players that are on this team that we think are going to be important pieces moving forward, but with Marty Scott here, maybe take a little different look, a different approach and Marty has a lot of experience both with a Major League club obviously as a farm director.

"Maybe he can take a different look at what's been going on and we think that could be a good approach to split the departments a little bit."

Stanton could rejoin lineup by the weekend

MIAMI -- Mike Stanton took batting practice and did some jogging on Tuesday, and chances are the 21-year-old slugger will be in the starting lineup either Friday or Saturday.

Marlins manager Jack McKeon says Stanton would be available for pinch-hit duties on Tuesday against the Mets at Sun Life Stadium.

The Marlins are off on Thursday before opening a three-game series with the Pirates on Friday. Stanton is hopeful that either Friday or Saturday he will be back in right field.

"It's still a process," said Stanton, who tweaked his right hamstring last Saturday against the Phillies.

Stanton has 32 homers and 81 RBIs, and he is batting .261 with a .351 on-base percentage and .543 slugging percentage.

Bryan Petersen has been playing right field as Stanton recovers.

"I'm ready to pinch-hit," Stanton said.

Stanton experienced tightness in his hamstring while running to first in a groundout against the Phillies.

On Monday, he hit off the tee in the cages, before doing work on the field on Tuesday.

Worth noting

• Marlins manager Jack McKeon said that either Brad Hand or Alex Sanabia would start the final game of the Braves series next week and the other would start during the Sept. 15 doubleheader against the Phillies.

• Mike Cameron left Tuesday's game in the 11th inning with a tight right hamstring. He is listed as day to day.