He not only won world table tennis singles championship but won more than one Wimbledon tennis singles title?
easy.
FRED PERRY.
he was the last brit to win wimby (1934,1935,1936)
in fact he also won us open during those same years
and french open at 1935
and aussie open at 1934
no.1 for 4 years consecutive and 5 years total
table tennis world [...]