Napheesa Collier, Kahleah Copper, Allisha Gray headline the list of WNBA players who advance out of the first round of Unrivaled’s 1v1 tournament.

Unrivaled basketball went head-to-head for Monday's 1v1 tournament tip-off, with a few big first-round upsets already breaking brackets.

Unrivaled’s regular season uses a modified 18-second shot clock, but its one-on-one tournament will have a seven-second shot clock. Game flow is make-it-take-it, meaning if a player scores a basket, they retain possession. Games follow traditional scoring rules; a 2-point shot still counts for 2 points and a 3-pointer is worth 3 points.

Breanna Stewart, Napheesa Collier headline a star-studded cast of WNBA players who will participate in Unrivaled’s inaugural 1v1 tournament.

Unrivaled released its inaugural in-season 1v1 tournament bracket on Wednesday, setting up heated head-to-head matchups next week.