PHOENIX -- Kahleah Copper scored a career-high 38 points and combined with Sophie Cunningham for the last 16 points as the Mercury recovered after losing a 10-point fourth-quarter lead to beat the Dream 88-85 on Saturday night.
Cheyenne Parker-Tyus had 11 points and Allisha Gray 10 in the fourth quarter as the Dream, down 70-60 with 8:43 to play, charged back to lead 81-74 at the 4:11 mark. A layup by Parker-Tyus produced Atlanta's first lead of the game at 73-72.
Cunningham answered with a 3-pointer and Copper's four free throws pulled the Mercury within 83-81 with 1½ minutes to play. Following an offensive foul on Tina Charles, Copper found Cunningham on the left side for a 3-pointer and the lead with 1:11 to play. Natasha Cloud then blocked a Rhyne Howard attempt, and Copper converted that into a layup for an 86-83 lead at 28.1 seconds.
Parker-Tyus made it a one-point game again, but Copper answered and Howard missed a 3-point try for the tie.
Diana Taurasi had 15 points and Cunningham 10 for the Mercury (1-1), who gave coach Nate Tibbetts his first win in the WNBA.
Gray finished with 22 points, Howard had 21, and Parker-Tyus scored 18 for the Dream (1-1).
Phoenix led from the outset, scoring the first seven points and leading 24-15 after one quarter and 43-37 at the half. Copper and Taurasi combined for 23 points, but Howard kept the Dream in it with 17, going 4-of-5 on 3-pointers.
Atlanta closed the third quarter with a 7-2 run to clip another point off the Phoenix lead and trailed 65-60 going into the fourth quarter, despite Copper scoring 16 of the Mercury's 22 points.
At halftime, the Mercury unveiled banners for their Ring of Honor members: first coach and general manager Cheryl Miller and players Penny Taylor, Bridget Pettis, Jennifer Gillom and Michele Timms. Four were inducted to the team's Hall of Fame in 2006 while Taylor, who along with Taurasi played on all three Mercury championship teams, was inducted in 2017.