Career
He played eight professional teams but only played one game at the major league level Early career
Mahaffey"s early career was spent playing in many minor leagues in the Midwest from 1895 to 1897. He played in the Western Interstate League, the Western Association and the Western League before he got a chance to play with Louisville in the Major Leagues.
Louisville Colonels
In his only game with the Louisville Colonels of the National League in 1898, Mahaffey took the loss surrendering three earned runs in nine full innings pitched.
Mahaffey made five plate appearances, walking once and failed to get on base the other four times. Portland Webfoots
Mahaffey signed with the Portland Webfoots of the Pacific Northwest League in 1901.
A few weeks into the season he was forced to change his position from pitcher to first base by manager Jack Grim. He hit.197 with 62 hits in 315 at bats.
On the fielding side he committed 32 errors in 80 games.
In 1902, Mahaffey returned to Portland where he hit.230 with 26 hits in 113 at bats. After Lou Mahaffey"s brother and teammate Joe injured his arm after pitching a 16 inning game for the Webfoots, manager Sammy Vigneux announced he was releasing Joe. Lou Mahaffey quit the team in response.
Umpire career
After retiring from playing, Mahaffey was hired to umpire in the Northwestern League in 1905.
He joined the Pacific Coast League as an umpire in 1906. In 1907 Mahaffey got into a dispute with league president J. Cal Ewing over wages which led to Mahaffey"s resignation.
Mahaffey claimed other league umpires received $50 to $100 more and was quoted by the Morning Oregonian as saying, "I have never yet worked for less then the other fellows and it"s too late to begin now.".