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MIAMI -- Florida Marlins closer Leo Nunez has been playing under an assumed name, and the issue prompted him to return Thursday to his native Dominican Republic, two people familiar with his immigration status said. Buster Posey Jersey . Both people said the Marlins have been aware of the issue for several months. They spoke to The Associated Press on condition of anonymity because Dominican and team officials havent made any public comment on the case. One of the people said Nunezs real name is Juan Carlos Oviedo and hes 29, a year older than listed in the team media guide. The Marlins placed Nunez on Major League Baseballs restricted list, and he isnt expected to pitch in the final week of the season. His agent, Andy Mota, declined to comment. The Marlins travelled Thursday to Milwaukee for their final road series of the season. Nunez has 36 saves and a 4.06 earned-run average in 68 games this year. His ERA was 2.59 in late May but is 6.00 since then. The right-hander has an effective change-up and a fastball that reaches 97 m.p.h., and in three seasons with Florida he has 92 saves. He pitched a scoreless ninth inning in Wednesdays victory over Atlanta. Nunez, who is married, turned professional in 2000 when he signed with the Pittsburgh Pirates. He was traded to Kansas City in late 2004 and made his major league debut with the Royals the following season. The Marlins traded for him after the 2008 season. According to his Marlins biography, he was born in Jamao al Norte, Dominican Republic, and lives in Bonao. Nunez will be in his final year of arbitration after this season and was expected to make about $6 million in 2012. Even before the issue regarding his identity surfaced, it was unclear whether the Marlins would try to re-sign him. The players association had not immediately determined whether to challenge the Marlins decision to place him on the restricted list, a person familiar with the unions deliberations said. The person spoke on condition of anonymity because the union had not made any public statements. Bruce Bochy Jersey . - Holden Cook and Kyle Hope combined for seven points as the Owen Sound Attack downed the visiting Barrie Colts 5-1 on Wednesday in Ontario Hockey League action. Matt Williams Jersey .J. -- After getting permission from his 7-year-old daughter, New York Giants offensive lineman David Diehl has retired after an 11-year career that included two Super Bowl championships.TAMPA, Fla. -- New York Yankees shortstop Derek Jeter has resumed on-field work for the first time since his 2013 season was cut short. The Yankees captain hit off a tee in a batting cage and fielded 108 grounders on the grass in front of the infield dirt Monday at the Yankees minor league complex. Jeter, who turns 40 in June, was limited to 17 games last year after breaking an ankle during the 2012 playoffs. "I dont think about it, and thats a good thing," Jeter said. Jeter broke his left ankle Oct. 13, 2012 during the AL championship series opener against Detroit. He was limited to five games and 11 at-bats during spring training last year, stayed behind in Florida when the team broke camp for rehabilitation and broke the ankle again in April during rehabilitation. "Its good to have a normal off-season and get some work inn," Jeter said. Sergio Romo Giants Jersey. "Everything is normal now." Jeter missed the first 91 games of the 2013 season, then felt pain his right quadriceps when he returned July 11. He went back on the DL, returned July 28 for three games, then strained his right calf. Back in the lineup on Aug. 26, he played through Sept. 7, when he left for a pinch runner after singling against Boston. While scans of the left ankle were negative, the Yankees said four days later his season was over. Jeter wound up hitting .190 (12 for 63) with one homer and seven RBIs, playing 13 games at shortstop and four at designated hitter. Jeter normally begins baseball activities in mid-Janaury in preparation for spring training. Yankees pitchers, catcher and injured players start workouts Feb. 15, with the rest of the team beginning five days later. cheap jerseys ' ' '