Arroyo took a line drive off of that leg from the bat of the Cardinals' Rafael Furcal in Sunday's win. He was in pain the rest of the day, but still pitched eight innings. The leg wasn't feeling better as he sat in the Wrigley Field visitor's clubhouse.
"It feels like it did [on Sunday], and that's without doing anything," Arroyo said. "I got an extra day's rest, so I am just going to get a lot of treatment [on Monday], stay off of it a good bit and see what we can get done [on Tuesday]."
With a scheduled off-day on Thursday, Arroyo is expected to start on five days' rest on Saturday in Colorado.
"I'll be able to pitch," Arroyo said. "It's just getting a leg workout and running in [that] will be tough."