Riley had a goal and an assist in Friday night's match against San Francisco to earn his first weekly honor from the Conference.
The Toreros scored three goals in the first half to down the Tigers.
Pacific competes in the consolation brackets tomorrow.
Kriekie van Wyk lead the offense with three goals within an 11-minute span.
Bogdan Djerkovic and Jonathan Cooper each tally two goals to lead the Tigers on Sunday
Three Tigers earned a goal and an assist and the Tiger defense helped Mateo Gomez to his fourth clean sheet of the season.
Dohee Lee made her way into the round of 32 after claiming two singles victories on Friday.
Pacific upsets No. 5 UCSB with a 12-11 victory on Saturday
Riley Ramsey sets new career-high with 20 kills.
Mackaby Pennington places sixth overall to lead all Tigers on Saturday