Former Newcastle midfielder Jermaine Jenas said: "Son Heung-min is Tottenham's danger man, and especially in the first half, Newcastle knew he was playing out wide and they surrounded him with bodies.
"It was more of the same in the second half so Mauricio Pochettino made a couple of changes and he went with three at the back which allowed them width and meant Son could play in the pocket of space behind substitute Fernando Llorente. It allowed Spurs to play more direct.
"It was a lovely touch for the goal and Martin Dubravka made a big mistake. Spurs are still in the title race and it's in their hands to put themselves amongst it."