What will you tell your grandchildren about the strangest double play in postseason history? Here's everything you need to know about it.

Sal Frelick was still mad after a rare 8-6-2 Brewers double play vs. the Dodgers in the NLCS despite helping shift momentum Milwaukee’s way.

Brewers OF Sal Frelick had everyone confused on a game-changing double play that thwarted a Dodgers rally in Game 1 of the NLCS.

The ball hitting the fence made the play live, which caused chaos on the base paths. Frelick fired a throw in to shortstop Joey Ortiz who relayed the ball home for a force out as the L.A. runners retreated back to their original bases because they weren't sure whether it was a catch or not.

You have to see this unreal grand slam that somehow turned into a double play costing the Dodgers in Game 1 of the NLCS against the Milwaukee Brewers.

Sal Frelick stood in center field, his eyes wide, arms out and hat still on the ground, looking as momentarily confused as everyone inside American Family Field or those watching Game 1 of the National League Championship Series from home.

Max Muncy hit a ball off the wall with the bases loaded. But instead of Dodgers runs, it was a stunning Brewers double play amid confusion in NLCS Game 1.

One win from their first World Series, the Seattle Mariners never got off the ground. Seattle bounced into inning-ending double plays in three straight turns at bat and made a season-high three errors in a 6-2 loss to the Toronto Blue Jays that forced the American League Championship Series to Game 7.