Major League Baseball has its first triple play of the season.

The Seattle Mariners got lucky Thursday in their game against the Houston Astros when they recorded the rare feat after Astros designated hitter Evan Gattis forgot how many outs there were in the fourth inning.

Houston had runners on first and second with nobody out and Gattis at the dish. The team had a prime opportunity to take the lead, but instead, Gattis ended the inning rather than extending it.

The DH checked his swing and hit a grounder to third for an easy double play, as Mariners third baseman Kyle Seager touched the bag and threw to second for the first two outs. Gattis then started walking toward the dugout rather than continuing to first, assuming the inning was over when there only were two outs.

It was too late once he realized the inning wasn’t over and Seager alerted Robinson Cano, who threw the ball to Dan Vogelbach so he could apply the tag to complete the triple play.

Houston went on to win the game, however, by a score of 9-2.

Thumbnail photo via Joe Nicholson/USA TODAY Sports Images