Mantellato was accurate with his kicking, too, as Rovers won the game 50-30, sealing a place in the sixth round of the competition.
“I thought Josh was really good defensively too,” Chester told his club’s official website.
“We all know what he can do going forward and with the boot but the way he defended was extra pleasing.
“We’ve been working in training to kick a little bit more to Josh and it came off today.”
Chester also gave credit to the Bulls, who contributed plenty to an entertaining affair at Odsal.
“Credit to Bradford, they’re a good team who played smartly and they were the better team for the opening 10 or 15 minutes when they probably caught us off guard,” Chester added.
“Our discipline was poor and we conceded four penalties in the first five minutes, but I was really pleased with how we got ourselves back into the game.
“We found a way to get a result and we’re in the draw for the next round which is all that mattered.”