Arroyo was placed on the IL on July 9
The Red Sox made a roster move prior to their middle game in their series with the Milwaukee Brewers.
Boston on Saturday announced it reinstated Christian Arroyo from the 10-day injured list. To make room for Arroyo, the Red Sox optioned Jeter Downs to Triple-A Worcester.
Arroyo was on the IL since July 9 with a groin strain and fared well in his rehab assignment with the Portland Sea Dogs. He went 1-for-1 and had a stolen base, signifying his groin probably felt pretty good.
Arroyo will be in the lineup Saturday afternoon and play second base.
First pitch for Red Sox-Brewers is set for 4:10 p.m. ET and you can catch all the action beginning at 3 p.m. on NESN.