Major League Baseball's postseason is rapidly approaching, with the Los Angeles Dodgers seeking a third straight World Series title. Four teams clinched their playoff tickets Thursday, leaving only two spots remaining as the season reaches its final weekend.

The Dodgers are once again among the best teams in the big leagues, and they'll have several challengers in October, including the Milwaukee Brewers and Tampa Bay Rays. Los Angeles is rolling into the postseason and four-time MVP Shohei Ohtani returned to the lineup on Wednesday after a stint on the injured list. He appears ready for playoff baseball.

It was a busy Thursday in the playoff race, with the San Diego Padres, Chicago Cubs, Chicago White Sox and Cleveland Guardians all clinching invites to the postseason.

The New York Yankees, Boston Red Sox and Atlanta Braves have also previously clinched. Yankees slugger Aaron Judge, a three-time AL MVP, is dealing with a right calf strain that could keep him out through at least the Wild Card Series.

While the 12-team playoff field is mostly set, the final NL wild card and AL West winner are still up for grabs.

Here's some of what to watch as the season comes to a close.

Here's who can clinch a playoff spot Friday

The Philadelphia Phillies can lock up the final NL wild card with a win over the Rays and a D-backs loss to the Padres.

AL Central and West are tight, other division winners are set

There's quite a bit of mediocrity in the AL Central and West divisions this season, which has led to some fascinating pennant races and could lead to a sub-.500 team making the postseason.

The Guardians (83-76) have a narrow advantage over the White Sox (82-77) in the AL Central, but Chicago owns the head-to-head tiebreaker. Cleveland plays at Kansas City this weekend, while the White Sox host Colorado. Both teams have already clinched at least a wild card, but the division winner will get a bye into the Division Series.

The Rangers (79-80) and Astros (79-80) are fighting for the AL West, and Houston has the tiebreaker if the season ends in a tie. Texas is playing at Minnesota this weekend, and the Astros are playing in Sacramento against the A's.

In the National League, the Padres (89-70), Cubs (88-71) and Phillies (87-72) are jockeying for position in the wild-card race. The Diamondbacks (85-74) are a longshot to sneak past the Phillies into the bracket, but they've won five straight games and are still lurking two games back. Chicago holds the head-to-head tiebreaker for home field over Philadelphia and San Diego, and the Phillies own the tiebreaker over the Padres after sweeping that season series 6-0.

Chicago's series at Boston has already been impacted by a nor'easter hitting New England this weekend. The Cubs' Sunday finale was rescheduled as part of a doubleheader Friday, and they are now scheduled to conclude their season Saturday.

MVP races, stats to watch

MLB's major awards probably won't have much drama this season.

Both MVP races have strong favorites with Chicago's Pete Crow-Armstrong running away with the NL honor while Houston's Yordan Alvarez is the probable choice in the AL, though Tampa Bay's Junior Caminero has also had a fantastic season. Alvarez still has an outside shot at a Triple Crown. He leads the AL in batting average at .315 and his 41 homers are tied with Caminero, New York's Ben Rice and Baltimore's Pete Alonso. His 102 RBIs are eight back of Alonso.

For the Cy Young Award, Milwaukee flame thrower Jacob Misiorowski and New York ace Cam Schlittler are the favorites in the NL and AL, respectively.

The Rookie of the Year races also look set with Cincinnati's Sal Stewart and his 110-RBI season the leader in the NL and Detroit's Kevin McGonigle the favorite in the AL.

What is the MLB playoff format?

There are 12 teams that qualify for MLB’s postseason, including six teams from both the AL and NL. The three division winners in each league get seeds No. 1 through No. 3, ranked by win-loss record. Then the three wild-card teams get seeds No. 4 through No. 6, also ranked by win-loss record.

The top two teams with the best record in both the AL and NL automatically advance to the Division Series. The other eight teams play in the Wild Card Series, which is a best-of-three format beginning on Tuesday, Sept. 29. In both the AL and NL, the No. 6 seed will travel to face the No. 3 seed while the No. 5 seed goes to No. 4. The higher seed hosts all three games.

The winners then advance to the best-of-five Division Series, followed by the best-of-seven League Championship Series and a best-of-seven World Series between the winners of the AL and NL.

What is the MLB postseason schedule?

Wild Card Series: Sept. 29-Oct. 1 (NBC/Peacock)

Division Series: Oct. 3-10 (AL on TBS, NL on FOX/FS1)

Championship Series: Oct. 11-20 (AL on TBS, NL on FOX/FS1)

World Series: Oct. 23-31 (FOX)

Who are the favorites to win the World Series?

The Dodgers (+200) are the favorites to capture a third straight World Series title while the Brewers (+550), Rays (+800) and Yankees (+850) are viewed as the top contenders.

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