John Morrissey was named Pac-12 Men's Tennis Player of the Week after winning all three of his matches last week, including the clinching point of Stanford's upset over USC.
It's the first career honor for Morrissey and second for a Cardinal player this season, as Maciek Romanowicz was recognized in February.
Stanford (15-4, 6-0 Pac-12) finished 3-0 last week, defeating Fresno State, No. 15 UCLA and No. 5 USC.
The senior highlighted his week with a dual-clinching match against No. 19 Roberto Quiroz, prevailing 6-7 (5), 7-6 (2), 6-3 as Stanford defeated the Trojans for the first time since 2011, a span of 10 matches.
Stanford had not beaten USC at home since Feb, 3, 2006.
Morrissey entered Saturday's match with a 2-8 career record against USC. He overcame deficits of 5-2 and 6-5 in the second set before prevailing.
Morrissey also notched a 7-6 (3), 6-3 victory over No. 119 Martin Redlicki of UCLA on Friday to lead Stanford past UCLA 4-3, signaling the first sweep of the SoCal schools since 2009.
Stanford has clinched at least a share of the Pac-12 title, something it last accomplished in 2010. With a victory over visiting California on Saturday (2 p.m.), Stanford can claim the conference crown outright for the first time since 2003.