Sports Week - Ring King Attempt 1.2

Playing 3-4 sport games this week. This was one I could play forever, at least it seemed. Not sure if it's going from a joystick/button combo to the keyboard, but I don't seem to have the timing I used to. Could also be from advanced age...
Also not sure if it was Ring King or King of Boxers. The one I played, pretty sure it was Ring King. But Mame has both listed, so not sure.

[@ClassicArcadeGameplay-CAG]

Odd my own comment seems to have been deleted, but... I remember that you could uppercut the opponent out of the ring. Will try getting that next time I play it.