Other mistake: When Mike loses his bankroll to KGB, he's wearing sweaters/jackets, so it's obviously cold out. 9 months later, he is driving a truck for Knish and wearing cold weather attire. It appears to be a month or so before the WSOP, which at the time was held in late April through May, and at the Judge's game, they indicate he may be an intern for one of them during the summer. So at this time it has to be March/April. 9 months earlier would be July/August, no reason to be wearing winter clothes.
Other mistake: Mike sits 300/600 limit poker and he wins one pot. The math doesn't add up to 30k.