The Chicago Sky, the reigning champions, are assured of one of the top two spots in the upcoming W.N.B.A. playoffs. The rebuilding Indiana Fever are the only team out of contention. Everything else is up for grabs.

The final week of the W.N.B.A.’s regular season should be a showcase of the parity and chaos the league has seen all season. Six of the league’s 12 teams are battling for the final three playoff spots, and the teams that have already clinched are still jockeying for seeding.

At the top of the standings, the Sky are 25-8 and hold a two-game lead in the race for the No. 1 seed. Chicago can fall no further than a No. 2 seed after a win Sunday over the Connecticut Sun, but it will still need to hold off the Las Vegas Aces, who spoiled Sue Bird’s final regular-season game at Climate Pledge Arena with a win over the Seattle Storm. Chicago and Las Vegas face off Thursday in their final regular-season meeting.