[3][4] In 1905, Kinsella was fired from his offseason job as a machinist when he took a day off to watch a baseball game.

He made an immediate impact, winning 21 games with a 2.29 earned run average and leading the team in both categories.

Even the players bank on the big fellow when he goes to the mound..."[8] Despite this praise, Kinsella appeared in just 10 games for the Browns.

[1] The following season, he went back to the minors with the Western League's Denver Grizzlies and pitched for a pennant-winning team.

He moved up to the Pacific Coast League in 1913 but struggled and played part of 1914 in the Class D Central Association.