Mayfield was added to the Astros' 60-man player pool Sunday.
Mayfield can play second base and shortstop, but the Astros are entrenched in the middle with Jose Altuve and Carlos Correa. Additionally, Aldemys Diaz is a multi-positional infielder who is the primary backup in the middle. Mayfield made his MLB debut in 2019 and looked overmatched at the plate, batting .156/.169/.328 over 65 plate appearances.