Not that I know of, there have been many who played 2. Micheal Jordan played Basketball and Baseball. Ricky Hatton played soccer before pro boxing and Steve Nash played soccer, (not sure if pro) before Basketball.
2 pro sports is enough for one lifetime ;)
probably some jockey
Jim Thorpe played professional baseball, football, and basketball (although the basketball team was not a member of the NBA).
LeBron James
Yes. But i can't recall you that guy is. MY friend told me just yesterday
Yes. Only a Canadian athlete has accomplished this.
No only Ben dennison
yes Justin Verlander wore number 35 through childhood and into the MLB.
36% of doctors have ever played high school sports
Impossible to say. Certainly sports have been played since before recorded history.
Running..............
No ... Vatican City has never had an athlete compete in the Olympics.
Cricket was one of the first sports played in Australia.