The Milwaukee Brewers, Los Angeles Dodgers, Toronto Blue Jays, and Detroit Tigers all won their respective Game 1s!
The Tigers and Dodgers won theirs on the road while the Blue Jays and Brewers, MLB's top two teams, got their Game 1 wins at home.
Tigers 3-2 Mariners
After an extra-inning battle, the Tigers went on the road to take Game 1 from the Mariners!
Seattle's Julio Rodriguez got things started in this game with a solo shot in the bottom of the fourth inning to put the M's up 1-0.
But Detroit wouldn't let that lead hang around for much longer.
After going down 1-2 in the count with two outs, Detroit's Kerry Carpenter blasted a two-run home run to deep right field to put the Tigers up 2-1 in the fifth inning.
However, for the M's, they were able to tie it all back up just an inning later.
Rodriguez would go on to record a clutch RBI single that tied it all up at two apiece.
The battle went into the 11th inning, where Detroit's Spencer Torkelson advanced to second on a past ball with no outs.
Seattle's Carlos Vargas struck out Dillon Dingler and Wenceel Perez, but Detroit's speedster Zach McKinstry lined one into center field to score Torkelson from second.
McKinstry would then steal second to keep the pressure on before Vargas eventually got Javy Baez to ground out to end the inning.
Rodriguez would keep things alive in the bottom of the 11th with a single, but it was all for naught in the end.
Seattle starting pitcher George Kirby went five innings, giving up two runs on six hits while striking out eight batters and walking one.
Detroit's starter Troy Melton was finished after four innings of work, recording four strikeouts and one walk while giving up one run on two hits.
The Tigers used seven bullpen arms in the game to the Mariners' six.
Cal Raleigh (3) and Rodriguez (3) recorded the only six hits for Seattle in the entire game.
Dodgers 5-3 Phillies
After going up 3-0 in the second inning, Philly was basically held hitless the rest of the way as the Dodgers fought back.
After putting up two runs in the sixth to close the lead to 3-2, Dodgers' Teoscar Hernandez launched a three-run home run in the next inning to give his squad the 5-3 lead.
Philly had the bases loaded with two outs in the bottom of the eighth inning, but couldn't bring any in after pinch-hitter Edmundo Sosa popped out to deep center field.
Dodgers rookie Roki Sasaki came in to close the game out. Phillies' Max Kepler doubled with one out, but his teammates couldn't bring him home.
Shohei Ohtani tossed 6 innings, giving up all three of the Phillies' runs on three hits while racking up nine strikeouts and walking one.
The frontrunner for NL MVP went 0-4 at the plate with a walk and four strikeouts.
Phillies start Cristopher Sanchez also had himself a solid night on the bump - giving up two runs on four hits with eight strikeouts and two walks through 5.2 innings.
Three of those eight strikeouts came against Ohtani himself.
Bryson Stott, J.T. Realmuto, Brandon Marsh, Bryce Harper, and Kepler recorded the Phillies' only five hits. The team finished 1-for-7 with runners in scoring position.
Six different Dodgers players recorded a single hit as they finished the game going 2-for-6 with RISP.
Blue Jays 10-1 Yankees
Five Blue Jays players had at least two hits in their 10-1 dominant Game 1 win over the Yankees - their first postseason win in nine years.
Vladimir Guerrero Jr. and Alejandro Kirk got things started with a pair of solo home runs in back-to-back innings. It was Vlad's first career postseason home run.
The Blue Jays got out of a sixth-inning jam where starting pitcher Kevin Gausman was taken out of the game after loading up the bases and walking a run home.
Relief pitcher Louis Varland came in the clutch and got out of the jam.
Kirk didn't just stop with his one homer. The veteran catcher put up another to give the Jays a 7-1 lead in the bottom of the eighth, where the Jays scored a total of four runs for the second straight inning.
Their catcher had one home run in game 161 of the season, then had two in the final regular-season game. Now, he's got two already in the team's first postseason game, making Kirk one of the hottest hitters in baseball.
Toronto relievers Seranthony Domínguez, Brendon Little, and Jeff Hoffman proceeded to hold the Yankees scoreless en route to the team's Game 1 victory.
New York put up only six hits, with two of them by Aaron Judge. Their starting pitcher, Luis Gil, was done after 2.2 innings of work, giving up two runs on four hits with two strikeouts and two walks.
Relievers Luke Weaver and Paul Blackburn gave up a combined seven earned runs on eight hits.
Brewers 9-3 Cubs
The Brewers scored all nine of their runs in the first two innings of the game, six in the first inning alone. Jackson Chourio became the first player in MLB history to record three hits in the first two innings of a postseason game.
Cubs starting pitcher Matthew Boyd couldn't even finish the first inning as the Brewers unloaded on him and relief pitcher Michael Soroka in the second.
All three runs for the Cubs came off solo home runs from Michael Busch, Ian Happ, and Nico Hoerner.
Their three homers ended up being most of their hitting, as the team finished with just five hits in total.
Brewers ace Freddy Peralta gave up two of those home runs in 5.2 innings of work, recording nine strikeouts and three walks.
Chicago finished the game 0-for-2 with runners in scoring position, while the Brewers finished 7-for-17.
Game 2 of the NLDS between the Brewers and Cubs will be on Monday, October 6th.