The Cougars (4-4) fell to the regional rival Pioneers (3-1) in their fourth match this season against a nationally ranked opponent.
Sargeant defeated national No. 86 Henry Craig in a back-and-forth match, 6-4 (13-15), 5-6, 10-7. Goryachkov rallied in his match, winning the final two sets against Alex Gasson, 3-6, 6-4, 6-4.
Pfister also came out in front after the first set, but he could not keep the momentum going his way, falling to Diogo Rocha, 4-6, 6-1, 6-4. Fellow freshmen Aidan Carrazedo and Jeremy Bourgeois were bested in their matches, both losing in two sets.
BYU returns home against No. 44 Boise State on Saturday at 5:30 p.m. MST.
McKay Perry is the sports information director for BYU men's and women's tennis. Contact him at firstname.lastname@example.org