Alex MacKay
American baseball umpire (born 1989)
About Alex MacKay
Born 1989.
Alex Charles MacKay (born February 3, 1989) is an American professional umpire in Major League Baseball. He wears uniform number 9.
Career MacKay began working as a Minor League Baseball umpire in 2012 after graduating from the MiLB Umpire Academy. He umpired in the Florida Instructional League, Pioneer League, Florida State League, Southern League and Pacific Coast League.
MacKay made his major league debut on August 21, 2020, for a game between the Kansas City Royals and Minnesota Twins at Kauffman Stadium. Wearing uniform number 105, he was at second base, with Ed Hickox at first, fellow call-up umpire Jeremie Rehak as the home plate umpire, and Jerry Meals at third.
MLB promoted MacKay to the permanent staff prior to the 2025 season along with Paul Clemons and Emil Jiménez, upon the retirements of Paul Emmel, Jerry Layne, and Larry Vanover.
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
People in Alex MacKay's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Alex MacKay's
Frequently asked questions
Who is Alex MacKay?
American baseball umpire (born 1989)
When was Alex MacKay born?
Alex MacKay was born on 3 February 1989.
Sources & further reading
· DBpedia: Alex MacKay (umpire)
Cite this page
APA: Biography.guide. (2026). Alex MacKay. https://biography.guide/alex-mackay/
MLA: "Alex MacKay." Biography.guide, https://biography.guide/alex-mackay/.
Chicago: "Alex MacKay." Biography.guide. https://biography.guide/alex-mackay/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
Page generated 2026-09-27 05:11 UTC