Tempe, AZ – Nnemkadi Ogwumike and Chiney Ogwumike totaled 42 49 for 12 victory.
Nnemkadi scored 22 points, her younger sister added 20 and each pulled down 16 boards for the Cardinal (19-1, 10-0 Pac-12), who were coming off an overtime win over California on Saturday.
The Sun Devils (15-5, 6-3 Pac-12) were led by Deja Mann's 11 points, but it wasn't enough to extend their five-game winning streak.
Arizona State lost its 12th consecutive meeting against the Cardinal, but not without putting up a fight. The hosts fought to a 28-28 tie at intermission and were locked up at 40-all before going 10 minutes without a field goal.
Stanford's subsequent 20-2 run -- led by the Ogwumike sisters -- essentially put the game away.