Renteria signed with the then Florida Marlins in 1992 as an amateur free agent and spent most of four years in the minors before he was called up in 1996. Renteria played for a total of seven teams (Marlins/Cardinals/Red Sox/Braves/Tigers/Giants/Reds) and put up the following career statistics:
It seemed to me that Renteria was a better player while in the National League than in the American. It was percieved by many Boston faithful that he failed in his only season in Fenway. It was also deemed to be the same in Detroit. Granted his offensive numbers were a little less than what he was putting up in the National League, he put up a career high in strikeouts with 100 whiffs. His defensive numbers in Boston were downright horrible. He went from 11 errors the year before with the Cardinals to 30 with the Red Sox. No wonder he was run out of Boston in the trade with the Atlanta Braves with cash included in 2005.
Though by the time he was playing with the Giants in their World Series title year of 2010 he wasn't a full time player any longer, he was still a consistent presence in the lineup hitting .412 with 7 hits, 2 homers and 6 RBI in 17 at-bats against the Texas Rangers in the World Series.
I personally believe that his best year was in 2003 with the St. Louis Cardinals.