On this date in 1993, Nolan Ryan hit Robin Ventura with a pitch in a game between the Texas Rangers and Chicago White Sox. Ventura paused briefly after the hit, as if to consider his course of action, then charged the mound, where Ryan -- 20 years older than him -- put him in a headlock and punched him several times in the head before the whole thing was broken up by the usual basebrawl scrum.
Three things about this fight are certain: One, Ryan was very clearly the victor. Two, it became a staple of sports highlight shows and will likely remain so as long as sports highlight shows exist.