Andy Murray
Murray mobbed by teammates after sealing victory.Getty

Andy Murray has sealed Great Britain's first Davis Cup triumph in 79 years with his singles victory over Belgium's David Goffin. Murray beat the world no. 16 6-3 7-5 6-3 to give Leon Smith's side an unassailable 3-1 lead in the best-of-five contest.

Goffin had beaten Great Britain's Kyle Edmund on Friday 27 November as Belgium drew first blood. But Murray's win over Ruben Bemelmans that afternoon drew them level before he and his brother Jamie beat Steve Darcis and Goffin in Saturday's doubles contest to leave them on the brink of success.

24-year-old Goffin gave the hosts some hope with a resilient performance against the world no. 2, a far cry from his performance at the Paris Masters earlier this month where he was thrashed 6-1 6-0 by the Scot.

But Murray held his nerve to seal the victory in straight sets, winning it with an outstanding backhand lob before being mobbed by his teammates.

"It's been an incredible few years," said an emotional Murray, who has won all 11 of his Davis Cup matches in 2015. "I can't believe we did it, I never thought we would. I play my best tennis when I play for my country. The atmosphere was phenomenal. I imagine we'll have a party tonight."

Goffin applied early pressure and held Britain's no. 1 at 2-2 in the opening set before Murray opened up a lead with a series of vicious returns to win the next three games.

An accurate forehand into the corner left the Belgian chasing shadows as he sealed the opener, but Murray was made to work again in the second with his opponent standing toe-to-toe, holding him at 5-5. Murray opened up clear daylight eventually when another powerful forehand forced break point, with Goffin only able to find the net with his return.

Goffin's resistance was broken in the third set and in breaking to love at 5-3, Murray set himself up for that outstanding winning shot.