26. Jesse Tannehill

Jesse Tannehill had a cup of coffee with Cincinnati in 1894 but returned to the National League in 1897 with the Pittsburgh Pirates.

Tannehill's first full year was non-descript (9-9, 4.25 ERA), but he emerged as a top hurler for the squad over the next five seasons.  The lefthander won at least 18 Games every year, with four of them exceeding 20.  Tannehill had an ERA under 3.00 all of those years, with an ERA Title in 1901 (2.18), the same season he led the NL in FIP (2.59).  

He jumped to the New York Highlanders of the American League in 1903, thus ending his run with Pittsburgh, leaving the team with a stellar 116-58 record with an ERA of 2.75.  Tannehill was also a competent fielder, sometimes playing in the Outfield, which the Pirates were fine with considering he was a decent batter.  Over 865 At Bats with Pittsburgh, Tannehill batted .277 with 96 RBI, a more than respectable metric considering he was primarily a Pitcher.