Matthew Walker, 25, will be released after spending six months in county jail, according to Chief Deputy District Attorney Steve Wagstaffe in a Feb. 4 report. He will receive three years' supervised probation, instead of the two years in state prison prosecutors had sought.
Robert Davis, 22, who was also arrested following the incident, is scheduled for a Feb. 16 jury trial.
According to the district attorney's office, Mr. Walker struck up a conversation with another man about judo as they waited for rides after getting off the train. Things escalated after Mr. Walker started demonstrating some moves, with Mr. Walker breaking the man's leg.
When the man's friend started to record the assault with a cell phone camera, Mr. Davis allegedly snatched the phone and demanded $20. The man Mr. Walker had beaten took out his own phone to call police, and Mr. Walker and Mr. Davis attacked both men, knocking the second man unconscious, according to the district attorney's office.
Mr. Walker won in his category in the 2009 USA Judo President's Cup tournament.