10:15 AM PT -- Upon further review of the video ... the 3rd baseman is Laura Govan, Gilbert Arenas' fiancee. Apparently Ray J forgot about Gilbert's love for guns.
Ray J plays to win ... just ask the poor woman who got knocked on her rear end during a charity softball game this weekend.
It all went down at NBA star JaVale McGee's 1st Annual JugLife Celebrity Softball game on the UCLA campus. Ray J was trying to stretch a double into a triple and instead of sliding ... he ran right through the girl playing third base. You gotta watch to see if she hangs on for the put out.
At least it was for a good cause -- a program to get clean drinking water in Uganda. Although, we doubt Ray's play had any impact on how much water gets there.
We haven't seen Ray J bang a woman this hard since ... yeah, that chick.