The Tokyo Olympics marks the 32nd Olympiad, and first to take place in an odd year.
The previous 31 editions have provided many unique and unforgettable storylines. From the swimming pool to the hockey turf, the diving board to the long jump pit, there is always a great sporting tale that comes out of the Olympics. And this year you can add skateboard ramp, surfboard wave, karate mat and rock climbing wall to the Olympic parlance.
Line up at the starting blocks and take a trip down memory lane as we count down the 21 most memorable sporting moments at