Stanford senior guard Toni Kokenis, a member of two Final Four teams, has been forced to end her playing career following a pair of concussions over the past year.

The school made the announcement Friday that Kokenis would take a medical retirement but remain on the team as she works toward her degree in human biology.

Kokenis missed the final 14 games of the 2012-13 season, with Stanford saying only that she was sidelined with an undisclosed medical condition. Hall of Fame coach Tara VanDerveer and Kokenis each had remained optimistic she might be able to return for her final season.

She didn't play again after sustaining a second concussion on Feb. 3 at Oregon State. Stanford said her first concussion came during spring workouts in 2012.