"The Bachelorette" star JJ Lane got bit so badly during a hockey game he almost lost his finger.
JJ was on the ice Tuesday in Denver. He checked a guy, pinning him against the boards, when the opposing player went loco, chomping down on JJ's pinky.
One of JJ's teammates sprung into action, bashing the aggressor on the back with his hockey stick until the guy released JJ's digit.
JJ went to the ER where doctors cleaned out the bloody mess and splinted it up.
JJ's had a spate of bad luck lately ... he was hospitalized back in July after allegedly being jumped by gang members.