Rookie Deja Kelly outdueled fellow newcomer Kathryn Westbeld to drag the Las Vegas Aces to an entertaining 85-84 win over the Phoenix Mercury on Tuesday. Kelly scored the Aces' final six points, including the game-winning 18-foot step-back jumper. Mercury guard Shyla Heal missed a desperate heave to allow the Las Vegas to stay unbeaten in the preseason. Westbeld hit a 3-pointer to tie the game 77-77. A few possessions later, she added a jumper with 15.1 seconds remaining to give Phoenix an 84-83 lead. Following a timeout, Kelly drained a mid-range jumper over Westbeld to give the Aces the win.Phoenix Mercury vs Las Vegas Aces player stats and box scorePhoenix Mercury player stats and box scorePlayerPTSREBASTSTLBLKTOFG3-PT FGFT+/-Alyssa Thomas5550012-50-01-2-7Natasha Mack7321023-40-01-2+12Satou Sabally14521025-92-52-2+4Kahleah Copper6020013-80-20-0+1Monique Akoa Makanni5141012-31-10-0+13Alexis Prince10410014-71-21-1+3Kathryn Westbeld14300006-132-40-00Temira Poindexter0200020-10-10-0-10Kalani Brown2210021-20-00-0+1Sami Whitcomb3000001-11-10-0-4Alexa Held3200011-41-30-0-8Celeste Taylor2100021-20-10-0+4Megan McConnell3012021-10-01-1-8Anna Makurat5000012-41-10-0-12Shyla Heal3720011-31-20-00Sevgi Uzun2000011-20-10-0+6 Las Vegas Aces player stats and box scorePlayerPTSREBASTSTLBLKTOFG3-PT FGFT+/-Kiah Stokes3000101-10-01-1-7A'ja Wilson14631304-120-16-8-4Chelsea Gray10562023-80-34-4-6Jewell Loyd11100024-83-50-00Jackie Young10120023-62-32-2-2Crystal Bradford9310004-71-30-2+7Queen Egbo0212010-10-00-0+9Elizabeth Kitley0101110-10-00-0+2Tiffany Mitchell4000002-60-20-0-8Deja Kelly15020025-71-24-4+11Kierstan Bell0021000-20-10-0+3Aaliyah Nye5102001-51-52-20Harmoni Turner4101002-60-20-00 Phoenix Mercury vs Las Vegas Aces Game SummaryThe Phoenix Mercury took on the Las Vegas Aces in Sin City on Tuesday to open their preseason campaign. Without Diana Taurasi on the roster for the first time since 2004, the new-look Mercury embraced their new era with Alyssa Thomas leading the team.The first quarter was a defensive struggle, which resulted in an inefficient shooting night from both teams. Phoenix's revamp roster surprisingly held up well in the opening 10 minutes against the old reliables of the Aces. The Mercury trailed by just two points at the end of the first quarter.The Mercury offense came alive in the second quarter behind Satou Sabally's scoring and Alyssa Thomas's playmaking. Acquired in the offseason, they pushed their team to a 47-46 halftime lead.A'ja Wilson led the Aces with 14 points, six rebounds and three assists. Jewell Loyd, playing her second preseason game with her new team, contributed 11 points.The Mercury built a 10-point lead midway through the third quarter, but the Aces recovered just in time to pull even. After the 19-19 tie in the period, Phoenix only led 66-65 heading into the fourth frame.Mercury rookie Kathryn Westbeld and Aces newcomer Deja Kelly dueled late in the game. Kelly scored her team's last six points, including the jump shot over the flailing Westbeld for an 84-85 win.