The South Korea international was a constant menace for the Black Cats on the left wing, getting the better of Jason Denayer, as Spurs inflicted another defeat on David Moyes' side through Harry Kane's second-half goal.
"He was so energetic, so tenacious in everything he did and he did it with high skill," the Sky Sports pundit said.
"The only thing he probably lacked was a good chance on goal.
"The nearest got a deflection off his own player when it was goal bound, but he was creative, buzzy, everything was quick.
"And the run on the outside at times helps as well. He did not get much help from Jan Vertonghen at full back, so he had to do it all by himself.
"But Denayer will be glad to see the back of him anyway as he gets the bus back up to Sunderland thinking: 'I hope I do not have to come up against players like him all the time.'"