It was hard to tell on replay, as some angles made it seem as if Brock Holt got the tag in on Hanigan before he reached the base.
"I thought he was out," said Farrell after Tampa Bay's 4-3 win in 10 innings. "I thought it was a [darn] good throw, which we've seen any time there's been opportunities for him to cut down a baserunner. It's a true weapon."
Sean Rodriguez, pinch-running for Hanigan, wound up scoring the winning run on a single by Matt Joyce.
"I was already committed to going, and it was obviously as close as it gets, really," said Hanigan. "But hey, we got a call, and it looked like I got it in there. It set us up to get a guy in scoring position for that W."
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.