The Bruins return to the court on Friday at the John Wooden Center, taking on Oregon at 6 p.m.
Jacobs and Ndiaye will join the Bruins in 2020.
UCLA ranks third among Pac-12 teams in assists and kills per set.
All four sets were decided by 25-22 scores.
The Bruins return to the court on Saturday at the John Wooden Center against No. 16 Utah at 5 p.m.
Thursday's match will be at Pauley Pavilion, while Saturday's will be at the John Wooden Center.