Since they had a challenge left, there was nothing to lose in giving it a shot. The Mets need to use their ABS Challenges in high leverage situations with men in scoring position or when the game is on the line, as it was in the ninth inning today.
For every game like today's, where the Mets failed to use their challenges, there is another game in which Mets hitters "wasted" their challenges with 2 out and nobody on in the second or third innings. If a hitter is going to use a challenge in a low leverage situation, then they best be damn sure they are correct.