Napier, a senior from Santa Ana, Calif., recorded 37 kills (6.17 KPG) on 73 attempts with eight errors (.397 hitting percentage) in Arizona's two, three game sweeps over No. 15 Stanford and California. She also added eight digs and seven blocks in those two matches.
Napier had a game-high 16 kills, a .419 hitting percentage, four digs and four blocks against the Cardinal, then posted a career-high tying 21 kills while hitting .381 in a victory over Cal.
It is the first weekly honor for Napier and Arizona's 14th Player of the Week all-time.