Yes, that was the one the Spaceman was injured in: I remember the fight but I can't remember if I saw it live or on replays.
"May 20, 1976: Yankee outfielder Lou Piniella crashes into Red Sox catcher Carlton Fisk feet first in an attempt to score in the sixth inning of a game at Yankee Stadium. The two benches clear while Piniella and Fisk brawl at home plate. After the fight apparently dies down and order appears to be restored, Sox pitcher Bill Lee and Yankee third baseman Graig Nettles begin exchanging words, and another fight breaks out. Lee suffers a separated left shoulder from the tilt and misses a significant portion of the 1976 season. He would continue to pitch until 1982, but his level of performance is not the same as it was prior to the fight."
But still I think this was my favorite. I remember it well, even though I only heard it on the radio. They only televised one game a week outside of Boston in those days. Radio was TV.
"August 1, 1973: In a game at Fenway Park, with the score tied 2–2 in the top of the 9th, Yankees catcher Thurman Munson attempts to score from third base on a missed bunt by Gene Michael. He crashes into Red Sox catcher Carlton Fisk, and a fight erupts, with Munson punching Fisk in the face."