On both occasions, he was celebrating his birthday with friends.
While clearly happy, Mr Griffin was playing down yesterday's win.
"It's only a sweepstake, it's not a biggie. I bought the ticket for $10 but I've got no idea how much I'll get. A couple of hundred perhaps."
Mr Griffin said he was a "rookie" and had chosen the horse "blind" but he'll definitely be back next year for another lucky punt.
Also lucky was Dave Chadwick who was seen counting his winning tickets after the race with his mate Stu Hare.
The two men had been at the pub since 11am and had placed over 60 bets between them.
Mr Chadwick, wearing a shirt with "It's ma lucky, lucky day" emblazoned on it, had $50 on Green Moon to win and was looking forward to cashing in his winning tickets.
Mr Hare said the pair had enjoyed a very successful day.
"Between us we're up about $6000 for the day. We've had a ball."