Engel Opens & Calls to Victory

Ari Engel opened to 450 from middle position, the player on the button called and Habib Bull called from the big blind. The trio saw the flop come {4-Spades} {4-Hearts} {A-Hearts} and all checked. The turn came {5-Hearts} , Bull bet 1,100, Engel called and the button called. The river came {7-Clubs} , Bull bet 2,500, Engel called and the button folded.