The Chicago Cubs claimed their first National League (NL) Central title since 2017, despite losing to MLB neighbours the Chicago White Sox 9-5.
While the Cubs did not win on Saturday, they still had plenty to celebrate thanks to the Milwaukee Brewers' 3-0 victory over the St Louis Cardinals.
Locking up the third seeding, the Cubs will host a wild-card series at Wrigley Field in Chicago, starting Wednesday.
The Cubs could face the Miami Marlins, Cardinals, Cincinnati Reds or Brewers, who are all vying for the sixth seed.
Meanwhile, New York Yankees duo DJ LeMahieu and Luke Voit are closing in on crowns.
LeMahieu is on the verge of winning the batting title, while team-mate Voit is poised to become home-run champion following the Yankees' 11-4 win against the Marlins.
Voit hit his MLB-leading 22nd homer of the season, while LeMahieu improved his average to .359 thanks to four hits and three RBIs.
Biggio and Grichuk fuel Jays
Home runs from Cavan Biggio and Randal Grichuk lead the Toronto Blue Jays past the Baltimore Orioles 5-2.
The Boston Red Sox routed the Atlanta Braves 8-2 thanks to Christian Vazquez's grand slam, while Tanner Houck struck out 10 in a dominant display.
Kyle Seager homered in both games as the Seattle Mariners swept their doubleheader against the Oakland Athletics 5-1 and 12-3.
Mets eliminated from playoffs
The New York Mets will not feature in the postseason. The Mets needed to win their three remaining games and receive help from rival teams to snatch a wild-card spot, but they lost 4-3 to the Washington Nationals in game one. The Mets also lost 5-3 in the second clash.
The Los Angeles Dodgers topped rivals the Los Angeles Angels 7-6 but will be sweating on the fitness of Mookie Betts, who was forced to exit the game after being struck by a pitch.
New York Yankees 11-4 Miami Marlins
Washington Nationals 4-3 New York Mets
Washington Nationals 5-3 New York Mets
Seattle Mariners 5-1 Oakland Athletics
Seattle Mariners 12-3 Oakland Athletics
Toronto Blue Jays 5-2 Baltimore Orioles
Detroit Tigers 4-3 Kansas City Royals
Texas Rangers 6-1 Houston Astros
Tampa Bay Rays 4-3 Philadelphia Phillies
Milwaukee Brewers 3-0 St Louis Cardinals
Minnesota Twins 7-3 Cincinnati Reds
Boston Red Sox 8-2 Atlanta Braves
Chicago White Sox 9-5 Chicago Cubs
Colorado Rockies 10-3 Arizona Diamondbacks
Los Angeles Dodgers 7-6 Los Angeles Angels
San Diego Padres 6-2 San Francisco Giants
Padres at Giants
The Giants need help if they are to reach the playoffs. San Francisco must beat the Padres on Sunday and hope the Brewers lose to the Cardinals to stand a chance of making the postseason for the first time since 2016. Drew Smyly takes to the mound for the Giants as the Padres counter with Adrian Morejon.