Trojans, led by speedster Vladimir Morozov, aiming for top 5 finish.
Trojans finish with seven swimming titles, most since 1977.
Quintero will be gunning to complete rare sweep of 200-500-1650 free.
Junior from Russia claims his second straight title in sprint free; Relay nets first crown since 1996.
Defending champions Morozov and Colupaev lead Trojans into four-day meet starting Sunday.
THIS SEASON: Justin DiFederico, a 2013 senior and a three-time conference finalist, is a strong 200y butterflyer who is also strong in the IM. He has consistently improved at USC and is still looking for his first NCAA Championships appearance.
2012: DiFederico reached the 2012 Pac-12 Championship final in the 200y fly for the second year in row, taking seventh again in 1:47.06. His prelim time of 1:45.63 was just off his PR and made him the second-fastest Trojan in the event last season. He was also 17th in the 400y IM (3:54.77) and 24th in the 200y IM (1:51.73) ... At the 2012 U.S. Olympic Trials, he was 48th in the 200m fly (2:02.16) and 106th in the 400m IM (4:38.96).
2011: DiFederico was a two-time 2011 Pac-10 Championships finalist as a 2011 sophomore, taking seventh in the 200y fly (1:47.60) and eighth in the 400y IM (3:57.53). He was also 23rd in the 200y IM (1:50.65). He set PRs in the 200y fly (1:45.57) and the 400y IM (3:52.94) in Pac-10 prelim swims, both NCAA `B' cuts and second best for the Trojans on the year.
2010: DiFederico's 2010 freshman campaign was highlighted by an 11th-place finish in the 200y fly (1:50.36) at the 2010 Pac-10 Championships. He was also 20th in the 100y fly (49.97) and 22nd in the 200y IM (1:52.02).
HIGH SCHOOL: DiFederico won CIF San Diego Section Division II titles in the 100y back and 100y fly as a junior and a senior while competing for Christina High in El Cajon, Calif. ... At the 2009 U.S. World Championships Trials, he finished eighth in the `B' final of the 200m fly (2:02.41) and was 13th in prelims (2:01.35) ... At the 2008 U.S. Olympic Trials, he was 54th in the 200m fly (2:03.11) ... Named to the San Diego Union All-San Diego Section first team.
CLUB/COACH: College Area Swim Team/Dave Kilmer.
PERSONAL: He was born on April 24, 1991. He is majoring in visual and performing arts.
DiFEDERICO'S PERSONAL RECORDS: