Teammate Jaime Garcia, translating for Samuel, told reporters that Samuel "pulled something on one pitch. He said he was throwing, and on one pitch he felt a little pull thing going on. He said he feels a lot better today. He's going to get it checked out."
Manager Tony La Russa also does not believe Samuel's condition to be particularly serious.
2010 Spring Training - null
Sights & Sounds
Spring Training Info
"It's not surgical," La Russa said. "Looks like they've just got to rest and treat it."
Samuel was optioned to Triple-A Memphis on Friday afternoon.