Though it's become commonplace to see a position player take the mound for the final few outs when his team is on the wrong end of a regular-season rout, it's rare to see a position player throwing pitches on the all-important postseason stage, regardless of the score.

In fact, it hadn't happened until 2015 -- and it's happened just twice overall.

Here's a look at each time a position player has toed the rubber in the postseason:

Austin Romine, Yankees (2018 ALDS Game 3)
The Yankees certainly weren't planning on using their backup catcher to close out the ninth inning of Game 3 of the 2018 ALDS against the rival Red Sox -- but manager Aaron Boone had little choice with his team trailing, 14-1. Having already used five pitchers, each of whom allowed at least one run, the Yanks turned to Romine for the ninth inning. After starting the frame with back-to-back groundouts from Xander Bogaerts and Rafael Devers, Romine issued a two-out walk to Ian Kinsler before allowing a two-run homer to Brock Holt, completing the only cycle in postseason history. Romine retired the following hitter to limit the damage to two runs off one hit and a walk.

Cliff Pennington, Blue Jays (2015 ALCS Game 4)
An infielder by trade, Pennington became the first position player to take the mound in a postseason game when the Blue Jays turned to him for one out against the Royals in Game 4 of the 2015 AL Championship Series. Trailing 12-2 in the game (and 2-1 in the series), Toronto brought Pennington off the bench with two on and two outs in the top of the ninth. He allowed a single to Paulo Orlando to load the bases, then served up a two-run single to Alcides Escobar before getting Ben Zobrist to pop out in foul territory behind home plate to end the inning. It was not only the first postseason pitching appearance by a position player, but it was also Pennington's first career trip to the mound. He later made his only other pitching appearance on April 12, 2018, when he tossed one inning for the Reds in a loss to the Cardinals.