Epiphanny Prince scored 16 of her 29 points in the final quarter to lift the Chicago Sky to an 87-82 win over the Atlanta Dream in a meeting of the Eastern Conference's top teams Friday night.
Angel McCoughtry, the WNBA's leading scorer, had 29 points and Tiffany Hayes added 12 for Atlanta.
Elena Delle Donne scored 18 points and Sylvia Fowles had 12 points and 18 rebounds for the Sky (24-9).
The Sky have clinched the Eastern Conference's top seed for their first playoff appearance. Atlanta (17-16) is the conference's No. 2 seed.
The Dream led 65-62 after three quarters. Fowles' layup put the Sky ahead 78-76 with 3:14 left. Prince then hit a jumper for an 80-76 lead with 2:05 remaining.
After McCoughtry made two free throws to cut the lead to 80-78 with 1:08 left, the Sky went 7 for 8 from the line to seal the win.
The regular season concludes Sunday.