![Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 7, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 7, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam](https://c8.alamy.com/comp/2NJPCHT/mason-mcgwire-during-the-wwba-world-championship-at-roger-dean-stadium-complex-on-october-7-2021-in-jupiter-florida-mason-mcgwire-is-from-irvine-california-and-attends-capistrano-valley-mike-janesfour-seam-images-via-ap-2NJPCHT.jpg)
Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 7, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam
Playing for Team USA: A McGwire Family Affair | The 15U NTIS tournament had an extremely strong field of players in Cary, North Carolina. One of the standout athletes was Mason McGwire,
![Mark McGwire's son Max could be the next great slugger at JSerra (Calif.) | USA TODAY High School Sports Mark McGwire's son Max could be the next great slugger at JSerra (Calif.) | USA TODAY High School Sports](https://usatodayhss.com/wp-content/uploads/sites/96/2017/08/dim7naeuqaai58i-e1540492071434.jpg?crop=0px%2C0px%2C1200px%2C720px&resize=1000%2C600)
Mark McGwire's son Max could be the next great slugger at JSerra (Calif.) | USA TODAY High School Sports
![Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 10, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 10, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam](https://c8.alamy.com/comp/2NJPADP/mason-mcgwire-during-the-wwba-world-championship-at-roger-dean-stadium-complex-on-october-10-2021-in-jupiter-florida-mason-mcgwire-is-from-irvine-california-and-attends-capistrano-valley-mike-janesfour-seam-images-via-ap-2NJPADP.jpg)
Mason McGwire during the WWBA World Championship at Roger Dean Stadium Complex on October 10, 2021 in Jupiter, Florida. Mason McGwire is from Irvine, California and attends Capistrano Valley. (Mike Janes/Four Seam
![John Antonoff on X: "Mark McGwire visits his son, #cubs 2022 8th round Draft Pick Mason McGwire on the quads. 03-25-2023. https://t.co/LNxFoQNqlj" / X John Antonoff on X: "Mark McGwire visits his son, #cubs 2022 8th round Draft Pick Mason McGwire on the quads. 03-25-2023. https://t.co/LNxFoQNqlj" / X](https://pbs.twimg.com/media/FsSPV4LacAEGwkI.jpg)