There aren't too many sports which left-handed players can't play, but one such sport is polo. Left-handed players were first banned in the mid-1930s, though that rule was relaxed after World War II, and then again reinstated in 1974.Know More
The original reason that left-handed players were banned from playing polo was for safety reasons; however, after World War II, players of either persuasion were scarce. The rules were relaxed in order to fill the ranks of players, but was then reinstated in 1974. The reason left-handed players are not allowed in polo is because when two players come at the same ball in opposite directions, it can easily lead to injuries for both players. It's like two cars playing chicken on a single lane road.