Masikewich will bring size and versatility to UCLA's 2019-20 roster.
Niyah Becker will represent Team Canada while Lola Pendande will play for Team Spain.
Close will serve as an assistant alongside head coach Jeff Walz (Louisville) and assistant coach Natasha Adair (Delaware).
Onyenwere and Team USA reached the semifinals of the FIBA 3x3 Women's Series.
Onyenwere scored a team-high nine points and also pulled down seven boards in a 15-11 win over Romania.
Gylten looking to find her niche in the medical world.