College Park Mayor Patrick Wojahn joined 11 other mayors in signing a letter to the Big Ten.
Universities are risking student-athletes' health while prohibiting them from speaking out.
The decision impacts cross country, field hockey, soccer and volleyball, among other sports.
It also pledged to work toward playing fall championships in the spring.
The group seeks to diversify the collegiate and professional coaching ranks.
Voluntary football workouts have been suspended.
Maryland tested 105 student-athletes in its original screening.
Players are using toolboxes and empty fields to stay in shape instead of state-of-the-art equipment.
Meghan Doherty and Nick Grill have made their decisions.