The last panel is an homage to Bobby Riggs who was world champion for three years in the 1940s and twenty years later would hustle bets by playing tennis matches while handicapping himself by doing such things as holding an open umbrella in his other hand or placing several chairs on his side of the net or wearing a buttoned-up full-length raincoat. His most famous hustle was challenging Billie Jean King to a match.
The last panel is an homage to Bobby Riggs who was world champion for three years in the 1940s and twenty years later would hustle bets by playing tennis matches while handicapping himself by doing such things as holding an open umbrella in his other hand or placing several chairs on his side of the net or wearing a buttoned-up full-length raincoat. His most famous hustle was challenging Billie Jean King to a match.