The Bruins are 7-1 in duals this season, but face their toughest tests of the year this weekend.
Annika Lenz followed up a pair of fourth-place springboard finishes with a second on Monday.
Polyakova and Lenz have finished Top 5 on both days of the Bruin Diving Invitational.
Annika Lenz was fourth in Saturday's 3-Meter, Maria Polyakova was fifth and Ciara Monahan seventh.
UCLA posted the best time in 12 of 14 races in Friday's victory in Corvallis.
UCLA swims for two days in Corvallis, while Spieker hosts the three-day Bruin Diving Invitational.
Seven seniors swam in their last home meets on Saturday, as #10 UCLA posted the tri-meet win.
Award is the first for the freshman and the 11th all-time for UCLA.
The 2015 season gets underway on Jan. 10 against Kansas and San Diego.
Sophomore Annika Lenz was sixth in the Platform, one of three Bruins in Sunday's event.
The Bruin swimmers claimed the meet title, while the UCLA divers spent day two in Georgia.
Freshman Maria Polyakova continued her great collegiate start with a win in Georgia on Friday.