Sinclair, now working as a pundit for the BBC, was an instant hero to Hammers fans after scoring both goals in a 2-2 draw with Everton on his debut in 1998 following a move from Queens Park Rangers.
In a career spanning five years at Upton Park, Tricky Trev - as he affectionately became known on the terraces - scored another 35 goals in 177 appearances, the most he made at any one club throughout his career.
He even went to the World Cup with England where he faced quality players in training and on the biggest stage of all.
Sinclair's 'toughest opponent' surprise
But he has sprung something of a surprise when revealing who was the best player he ever came up against on the pitch.
Ginola, who scored 13 goals and assisted many more in 100 memorable games for the White Hart Lane side between 1997 and 2000, appeared as a guest on Alan Brazil's Sports Breakfast on talkSPORT recently.
It is quite the compliment from Sinclair after 587 games as a professional.
Sinclair was at the peak of his powers for the Hammers while French star Ginola was strutting his stuff with their bitter rivals Spurs in North London.