James Leslie Carleton Also known as James Carlton
- Bats Unknown, Throws Unknown
- Height 5' 8", Weight 155 lb.
- Debut May 4, 1871
- Final Game May 22, 1872
- Born August 20, 1848 in Clinton, CT USA
- Died April 25, 1910 in Detroit, MI USA
Jim Carleton, sometimes listed as "James Carlton", played for the New York Mutuals in 1869 as a shortstop and was with Cleveland in 1870. Later, in 1871-72 he was first baseman for the Cleveland Forest Citys.
Carleton played in the first professional game in the first professional league in 1871, and went on to play every game of his team's 1871 season. He was the only first baseman used by the team that year, although his batting average was below the team average.
The following year, he boosted his batting average above the team average, but played only seven games even though his fielding percentage also improved quite a bit. It was just as well, perhaps, that he didn't stay with the team since the team folded after the season ended. 27-year-old Joe Simmons came to the team to play the other 18 games in 1872, hitting for a lower average than Carleton and posting a lower fielding percentage.