Did he know he was going to lose?
If he wasn't feeling well he should have stayed home. If he was distracted because of a health concern he should have stayed home. If he felt uneasy because of the drive perhaps he shouldn't have sat down at the table?
But I understand he has to gamble to earn his money. But at some point you have to say "it's not clicking today" so let me try again tomorrow.
There's no shame in walking away... or is there?