Fields, a senior libero, totaled 36 digs as the Cowgirls (17-8, 12-2 MW) swept San Diego State and defeated Fresno State in four sets.
Traphagan, a senior outside hitter, had 25 kills and hit .533 in the two road victories as Wyoming won for the 10th time in 11 matches.
The Cowgirls close their home schedule this weekend as they host Boise State on Thursday and Utah State for Senior Night on Friday.
