Who won his fourth Olympic gold medal with Paul MacDonald in 1988?

Question

After Canadian sprinter Ben Johnson won the 100 metre dash at the 1988 Seoul Olympics, why was his gold medal taken away and awarded to runner-up Carl Lewis?

Answer 1

Ian Ferguson
Ian Ferguson of New Zealand won three gold medals at the 1984 Olympics in Los Angeles (K-1 500 m, K-2 500 m with Paul MacDonald and K-4 1000 m with Grant Bramwell, Alan Thompson and MacDonald) and a fourth in the K-2 500 m with MacDonald at the 1988 Olympic Games in Seoul.