Rudy Hartono
Though perhaps less consistent in singles than he was in doubles, Gunalan was capable of playing it at the highest level. He reached the All-England singles final in 1974, losing in three close games to the iconic Rudy Hartono. He also helped Malaysia to reach the Thomas Cup final in 1970. He is the only Malaysian to capture gold medals in both men's singles and men's doubles at the Sea Games, the Commonwealth Games, and the Asian Games.