Jonah Hill & Don Cheadle Watched Kevin Hart Box Poker Champ

[[tmz:video id="0_po36kfks"]] Both Don Cheadle AND Jonah Hill showed up to watch Kevin Hart box a poker champ ... so says Antonio Esfandiari himself, who tells TMZ Sports his fight with the comedian was EPIC!!! We spoke with 40-year-old Esfandiari just…