Tottenham midfielder Dele Alli hailed two-goal Heung min-Son after victory at Middlesbrough.

For his second goal, Son claimed even he was surprised to see the strike hit the back of the net but Alli is adamant the 24-year-old is accomplished finisher.

"I don't know why he said he was so shocked about it, you see him do it all the time in training and he's always working on his finishing," Alli told the club's official website.

"He's a fantastic player and deserves all the credit he should be getting. He's on fire and hopefully he'll keep it going."