Ramirez, or "Han Ram," originally signed with the Boston Red Sox as a 17-year-old free agent in 2000. After spending the next five seasons at various levels of the Red Sox minor league system, he debuted with Boston in September of 2005, going hitless in two at bats. He was traded with Jesus Delgado, Harvey Garcia and Anibal Sanchez to the Marlins for Josh Beckett, Mike Lowell and Guillermo Mota.
In 2006 Ramirez opened the season as Florida's starting shortstop. He took home the NL Rookie-of-the-Year award, hitting .292 in 158 games for the Marlins. He hit 17 home runs with 59 RBI and stole 51 bases, good for third most in the National League.
2007 would see Ramirez again finish third in the NL with 51 stolen bases. He also increased his other statistics, hitting an NL fifth best .332 average, 29 home runs and 81 RBI. His 212 hits were second most in the league.
In 2008, Ramirez would earn his first All-Star invitation by hitting .301 with a career high 33 home runs, 67 RBI, and a league leading 125 runs. He would also take home his first Silver Slugger award.
2009 was his best season yet, finishing second in the NL MVP vote by leading the NL with a .342 average, hitting 24 home runs and 106 RBI. He won his second consecutive Silver Slugger and was again an All-Star selectee.
2010 was just another day at the office for an All-Star shortstop. Ramirez hit .300 for the fourth consecutive season and was selected to his third consecutive All-Star game.
2011 would see Ramirez struggle through injuries which limited his playing time and performance. He finished with a career low .243 average with only 10 home runs and 45 RBI with 20 stolen bases in 92 games.
Florida acquired another All-Star, base stealing, batting average champion shortstop in the 2011 offseason in former New York Met, Jose Reyes. After some initial friction on the subject, Ramirez has stated a willingness to do whatever it takes to help Florida win, namely, move to third base.
In 850 games for Florida, Ramirez has a career .306 average, second to Miguel Cabrera's .313. He has slugged 134 home runs with 434 RBI. He is also second on Florida's All-Time stolen bases list, with 216, and finished in the NL top ten in stolen bases in each of his first five seasons. He is currently signed with Florida through 2014.