"When it happened, a couple days after, I had a pretty good idea that I'd be back by this time," Flaherty said.
"I don't know honestly [if I could have avoided the DL]. This is the first time I ever pulled a muscle in my life. It was just kind of a trial-and-error with me because I had never done it before."
The versatile Flaherty got the start at second base against the Yankees, which is where he's expected to get the most playing time with second baseman Jonathan Schoop on the DL.
Brittany Ghiroli is a reporter for MLB.com. Read her blog, Britt's Bird Watch, and follow her on Facebook and Twitter @britt_ghiroli. This story was not subject to the approval of Major League Baseball or its clubs.