Tillie leads No. 1 Gonzaga past BYU 92-69.

Gonzaga guard Admon Gilder (1) goes up for a dunk in front of BYU guard Jake Toolson (5) during the second half of an NCAA college basketball game in Spokane, Wash., Saturday, Jan. 18, 2020. Gonzaga won 92-69. (AP Photo/Young Kwak)

Gonzaga guard Admon Gilder (1) shoots in front of BYU guard Jake Toolson (5) during the first half of an NCAA college basketball game in Spokane, Wash., Saturday, Jan. 18, 2020. (AP Photo/Young Kwak)

Gonzaga forward Filip Petrusev, center, is helped off the court by team staff after suffering an injury during the second half of an NCAA college basketball game against BYU in Spokane, Wash., Saturday, Jan. 18, 2020. Gonzaga won 92-69. (AP Photo/Young Kwak)