After graduating from the Jim Evans Academy of Professional Umpiring in 2010, Tomlinson worked his way through the minors, including the Arizona, Northwest, Midwest, Florida State, Texas, and Pacific Coast Leagues.
He officiated the 2017 XM All-Star Futures Game in Miami, as well as the 2016 Texas League All-Star Game.
Tomlinson enrolled in the University of Wisconsin-Stevens Point while simultaneously umpiring in the minor leagues.
Tomlinson is the eighth rookie umpire to have an MLB debut during this 2020 regular season.
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