[4] He served as third base umpire for the 2018 Triple-A National Championship Game, and was a crew chief in the International League the following season.

[5][4] On May 11, 2019, he made his major league debut for the first game of a doubleheader between the Detroit Tigers and the Minnesota Twins at Target Field.

[8] At the conclusion of the 2023 season, he was awarded his first postseason assignment: the 2023 American League Wild Card Series between the Texas Rangers and the Tampa Bay Rays.

[7] He played NCAA Division III baseball as a pitcher at Illinois Wesleyan University and was a part of the 2010 National Championship team his senior year.

[11] During the minor league offseason, Tosi worked in the finance department of Case New Holland’s Racine, Wisconsin, office.