At 16, Kayla Harrison was relatively green in her judo career and moved in with Ronda Rousey as they both trained in Boston with famed coach Jimmy Pedro.

Back then, Harrison’s main concern was surving on the mats with her older roommate, who used to “beat the crap out of” her.

“But it made me into the strong fighter I am today, so I’m grateful for it,” Harrison told ThePostGame.com.

Twelve years later, Harrison (2-0) is on the path to a title in the upstart PFL promotion, trying to win her first gold in MMA after collecting medals in judo at the 2012 and 2016 Olympic Games.