MLB September 7, 2023 3:42 pm MLB postseason format: How many teams, wild cards make the playoffs? The 2023 MLB postseason starts Tuesday, Oct. 3. Here is how MLB’s playoff format works. 49ers videos 2:57 Melvin reflects on Giants' ‘frustrating' loss to Red Sox 0:47 Murphy homer gives Giants 1-0 lead over Red Sox 0:40 Top Pirates prospect Paul Skenes dominating the minors. When will he make his MLB debut? 1:49 Toro excited about A's energy after sweeping Pirates 0:11 Toro slams homer to give A's lead over Pirates