Masataka Yoshida took a big step toward returning to the Red Sox on Wednesday. But another position player had a setback and won't be back as soon as once thought.

Red Sox rookie pitcher Richard Fitts is expected to begin a rehab assignment later this week, and other injury updates.

In first start off the injured list, Boston right-hander Walker Buehler lasts only 2 1/3 innings after heated confrontation with home plate umpire.

That’s nothing against Burdi, the 32-year-old veteran reliever who made his Red Sox debut last week. However, Boston optioned the 2014 second-round pick to Triple-A Worcester on Tuesday to make room for starting pitcher Walker Buehler on the active roster.

No plan to ask Rafael Devers about playing first base After Triston Casas' injury, Alex Cora addresses how the Red Sox plan to find his replacement at first base.<em