He raised more than £2,500 for terminally ill four-year-old Jack Allwood during a ten-hour tenpin challenge at Aldershot Bowling in Birchett Road.
League player Jason, 24, had been hoping to net £500 from the sponsored event, but he has already raised five times that amount with the cash still rolling in.
Jason, who manages Tudors bar in Station Road, Aldershot, is donating the money towards a campaign to create a £20,000 sensory garden in Jack's name.
Jack, of Wolseley Road, Aldershot, suffers from a rare metabolic disorder called Tay Sachs Disease, which affects only a handful of babies in the UK each year.
It affects the central nervous system, causing blindness, paralysis, organ failure and eventually death.
Brave Jack was at Aldershot Bowling to show his support.
Jason played a marathon of 68 games on Sunday, averaging an admirable 177 points per game.
His highest score was an astonishing 265 — just 35 points short of a perfect score.
Speaking afterwards he said: "It was definitely an experience.
"I've got a few blisters on my hand but it was good and I enjoyed it. Everyone was there to support me."
He raised a further £200 on the day by accepting challenges from other players.
Anyone who lost had to make a donation to the campaign.
Jason, who lost just one game, added: "The more tired I got, the better I bowled."