Grigor Dmitrov has won the season-ending ATP Finals in London after he defeated David Goffin of Belgium in three sets.

The Bulgarian sixth seed defeated Goffin 7-5 4-6 6-3 to win their clash thereby claiming the biggest win of his career in what was his debut appearance at the final tournament of the year.

He won all his matches in the Pete Sampras Group beating Dominic Thiem, David Goffin and Pablo Busta before his semifinal win over American tennis star Jack Sock secured another meeting with Goffin.

Their latest meeting ended with the Bulgarian sealing the biggest win of his career with the three-set victory over David Goffin at the O2 Arena in London.