Cat Thisius, who plays on the MedCity Mafia roller derby team and is recovering from surgery to treat her breast cancer earlier this year, helps her teammates tape out the track Wednesday evening, May 16, 2018, at Graham Arena in Rochester ahead of their home bout on Saturday. "It's weird not skating," Thisius said of the upcoming bout. Cat said she has skated in every home bout in the last couple of years besides Saturday's and one in March when she was recovering from surgery. "I feel invested, and being here is important,' Thisius said of helping out her teammates tape out the track. Thisius plans on skating in the team's last home bout in June.