Walter's performances for Clapton alerted the attentions of Tottenham Hotspur, who signed him in 1909. In doing so he became one of the first footballer's of mixed-heritage to play in England's top division. However despite excelling in his position, Tull was subjected to racial abuse and was subsequently dropped from the team.

[Pull Quote] "Let me tell those hooligans that Tull is so clean in mind and method as to be a model for all white men who play football. In point of ability, if not actual achievement, Tull was the best forward on the field" - Football Star 1909