In fact, Saltalamacchia went into his full trot, thinking he had just delivered the Red Sox a three-run shot. Instead, after the umpires took a look at it on replay, they correctly reversed it to an RBI double.
It turns out that the double had some history attached to it. With 40 doubles, Saltalamacchia set a single-season record for a Red Sox player whose primary position is catcher. Carlton Fisk (1978) and Jason Varitek ('99) held the previous mark at 39.
The double gave the Red Sox a 6-0 lead in the top of the third.
O'Nora might have been obstructed by right fielder Nick Markakis, who went in a full leap to try to catch the ball.
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.