A Chicago Cubs curse could fit the bill if Texas Rangers fans are looking for something to blame for Derek Holland's knee injury, which likely will keep him out until midseason.

It was Holland's dog, Wrigley, a boxer, who caused the starter to buckle on the stairs of his home and injure his left knee badly enough that he needed arthroscopic surgery Friday morning to repair torn cartilage.

"He was running up the stairs and clipped me," Holland said Saturday. "I hit my knee on the step, and if it wasn't for me grabbing the rail, I might have fallen all the way down the stairs and cracked my head open."