Mark Bellhorn is a native of Olviedo, Florida, and went to college at Auburn. The Padres selected him in the 37th round of the 1992 draft out of high school, then in college the A's picked him in the 2nd round of the 1995 draft, and signed him. Bellhorn got his first pro experience at Modesto of the California League, then played 1996 at Huntsville of the Southern League batting .250 with 10 HR and 71 RBI and 19 steals. He hit .328 in 70 AAA games in 1997 and went to the big club at midseason but batted just .228 in 68 games.
He spent most of 1998 back in AAA, then missed most of 1999 with an injury. He spent most of the next two years in the minors again, then was traded to Chicago for Adam Morrissey. Bellhorn was the Cubs' second baseman in 2002, batting .255 with 27 HR and 56 RBI and 86 runs scored. He began the next year by batting .209 for Chicago, then was swapped to Colorado in midseason. He batted .236 there. The Rockies sent him to the Red Sox in the offseason.
Boston rode a good season by Bellhorn to help them win the World Series. Bellhorn hit .264 with 17 HR and 82 RBI with 93 runs scored. He batted just .216 the next year, though, and after a brief sojourn in New York spent 2006 with San Diego, batting just .190.
Bellhorn was signed by the Reds in the offseason, and spent most of it at Louisville until a recent callup. He hit .243 with 11 HR at Louisville. Bellhorn is not a particularly good defensive player, and does not hit for a good average. He does have power and some speed, and draws a lot of walks. At 33, Bellhorn is limited but does have utility as a bench player.