26. Tuk Tuk Polo
Tuk tuk polo is a sport popularized by Sri Lankans. It follows the mechanics of polo except that instead of riding a horse, each player rides a tuk tuk, a 3-wheeled vehicle that is common in Asian countries. In the past, polo players rode elephants but this practice was stopped when one elephant ran amok.
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en.wikipedia.org
27. Two-Handed Tennis
As the name suggests, this game is practically just tennis except that players have a tennis racket in each hand. It was invented by Prof. Don Mueller who probably believed that two is better than one.
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en.wikipedia.org