A Mexican Baseball League hitter was so livid after he was drilled by a fastball Wednesday ... he straight-up attacked the pitcher with his bat AND helmet -- and the wild scene was all caught on video.
It all went down in the Toros de Tijuana game against Rieleros de Aguascalientes in Tijuana ... when Toros catcher Gabriel Gutierrez absolutely lost his mind in the 8th inning.
Things between the two teams had been chippy all night -- and when Gutierrez appeared to be purposely drilled by a pitch .