"That's the go-ahead run late in the game," he said. "You've got to gut through it and score the run."
Dirks was limited to rehab activity on Thursday, but said he hopes to get onto the field for a workout on Friday.
"It's kind of just day-to-day right now," Dirks said, "but I should be able to do things soon."
With Dirks out, Don Kelly started in left field Thursday against Rangers right-hander Yu Darvish, with Delmon Young at designated hitter.