FORT MYERS, Fla. -- When the Twins' Darin Mastroianni narrowly reached on an infield hit with two outs in the sixth inning of Boston's 4-3 win over Minnesota on Thursday, it was the perfect opportunity for Red Sox manager John Farrell to test the new instant replay system.
The umpires went through the process, and the ruling was upheld -- Mastroianni was safe.
"Again, we don't have the full system there [in Spring Training]," said Farrell. "I just went out there and said, 'Hey, I'd like you to take a look at it.' In-season, with a play that close, I'm sure there will be a little more time elapsed where there's an acknowledgement from the dugout -- either it's challengeable or don't."
In the top of the sixth, when Mike Napoli's blast down the left-field line was ruled foul, Farrell also had the umpires review that.
Again, the call stood. Potential home runs were already challengeable before this season's expanded replay changes.
"That looked like it was fair, Napoli's home run," said Farrell. "That's not a challenge, that's just a review on a ball that leaves the ballpark. That doesn't fall into the heading or category of the challenge. That's just a review."
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.