Ex-Boise State running back Jack Fields, Jr. was shot and killed by a cop at a Georgia hotel on Thursday ... after cops say he stabbed the deputy several times while resisting arrest.
According to multiple reports, cops responded to the Residence Inn in Augusta for a "trouble with subject" call around 8 PM when Sheriff's Deputy Stephan Psillos found Fields in the hotel lobby.
When Psillos went to handcuff Fields, he allegedly grabbed a knife from his coat and stabbed the officer multiple times ... according to a release by the Georgia Bureau of Investigation.