"I am going to drink a lot of beer. There's no way I'll be driving home after this," Davis said, after an amazing recovery which saw him overturn an 8-4 O'Sullivan advantage.
The six-times world and UK champion won pounds 135,000 - the largest single cheque of his 19-year professional career - and got his hands on a piece of silverware for the first time since capturing the Welsh Open in January 1995.
In addition, a 130 clearance, which was the highlight of a six-frame finishing burst, secured the event's pounds 15,000 highest-break bonus. The two combined to carry Davis's total career earnings over pounds 4.5m.
"This has got to go down as one of my best-ever performances," 39-year- old Davis said. His unequalled career total of titles now stands at 71.
Davis cited a summer fitness regime, new practice partners and an easier, freer "cue action" as possible factors behind his return to the limelight.
BENSON AND HEDGES MASTERS (Wembley Conference Centre) Final: S Davis (Eng) bt R O'Sullivan (Eng) 10-8. Frame scores (Davis first): 0-116, 0- 113, 72-13, 38-67, 78-50, 0-123, 62-46, 63-1, 32-96, 52-72, 7-122, 4-75, 109-0, 60-27, 130-1, 63-48, 74-46, 68-1.Reuse content