The Sox were up 4-2 heading into the bottom of the ninth inning. With two outs, Allen Craig hit a single and Kolton Wong was brought in as a pinch runner for the Cardinals. With Carlos Beltran up at the plate, Wong got a healthy start to try to steal second or run on a hit. But instead of delivering to Beltran, Boston closer Koji Uehara spun around on the first pitch to check the rookie at first base. Wong dove back to the bag but wasn't in time, and got tagged out to end the game on a pickoff, with Boston winning 4-2.
Wong tweeted an apology to Cardinals fans after the game. "All i want to say is i'm sorry #CardinalNation I go out everyday playing this game as hard as I can and leaving everything on the field," he wrote.
The Cardinals jumped to an early lead in the game, but Boston's Jonny Gomes hit a three-run home run in the sixth inning and the Red Sox never fell behind after that.
On Saturday night, the Red Sox lost 5-4 on an obstruction call in the bottom of the ninth inning.
The teams will play one more game in St. Louis before the series heads back to Boston on Wednesday for Games 6 and (if necessary) 7.
Game 5 airs tonight at 8/7c on Fox.