Matthew was the top seed and is ranked number two in the world
Britain's Nick Matthew won his first ISS Canary Wharf Classic title on Friday, beating Frenchman Gregory Gaultier in the final 3-1.
World number two Matthew, 29, completed his victory in 69 minutes in a match that included two tie-breaks.
The top seed eventually triumphed 12-10, 6-11, 13-11 and 11-3.
Matthew showed few signs of fatigue despite his epic two-hour semi-final with fellow Yorkshireman James Willstrop the previous evening.
Gaultier, the second seed, blamed tiredness for letting slip a 6-2 lead in the third game.
And Matthew ran out an easy victory in the fourth as the Frenchman's challenge wilted.