| Number: | 66 |
| Alex Tosi | |
| Birth Date: | March 7, 1988 |
| Birth Place: | Markham, Ontario, Canada |
| Width: | 275px |
| Debutleague: | MLB |
| Debutyear: | May 11, 2019 |
| Umpirecrew: | B (2) |
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| Highlights: | Special Assignments
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Alexander Vincent Tosi (born March 7, 1988) is a Canadian-born American Major League Baseball umpire.[1] He made his first appearance at the Major League level in 2019 and was promoted to the full-time umpiring staff for the 2023 season.[2] [3]
He wears uniform number 66.[4]
Tosi began umpiring while playing high school baseball. He made his minor league debut with the New York–Penn League in 2011, and spent time in the Midwest, Florida State, Arizona Instructional, and Eastern leagues before his Triple-A advancement in 2016. 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]
On May 11, 2019, he made his major league debut for the second game of a doubleheader between the Detroit Tigers and the Minnesota Twins at Target Field. Tosi was on third base, with Paul Nauert at second, Jordan Baker at first, and Chad Whitson as home plate umpire.[6]
Tosi was home plate umpire for the Houston Astros combined no-hitter against the New York Yankees at Yankee Stadium on June 25, 2022.
In December 2022, he was hired as a full time MLB umpire. Upon hearing the news, Tosi’s father congratulated him on "officially [having his] first full time job". 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]
Tosi was raised in Peoria, Illinois, and graduated from Dunlap High School in 2006.[8] 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.[9] He received a degree in finance.
During the minor league offseason, Tosi worked in the finance department of Case New Holland’s Racine, Wisconsin, office. He was living in Missouri when he was hired as a full-time major league umpire, and currently resides in Arizona.[10]