Bradford forwards Matt Diskin and Craig Kopczak may not play again this year after picking up serious injuries in the derby defeat by Leeds.

The Bulls are still coming to terms with the loss of centre Adrian Purtell, who suffered a heart attack after Sunday’s 37-22 defeat at Manchester’s Etihad Stadium, and their problems worsened today when coach Mick Potter revealed the extent of a second injury crisis.

In addition to hooker Matt Diskin, who dislocated an shoulder, and prop Craig Kopczak, who sustained ankle ligament damage, Bradford have lost winger Elliott Kear with a broken wrist and centre Chev Walker with a broken rib.

Diskin, who will lose an ever-present record this season, and Kopczak, who missed five earlier this year with a broken finger, have been ruled out for at least three months.

Kopczak will miss Wales’ international against France in Wrexham on June 16.

“Kopczak’s ankle got caught after he was rolled back over by a couple of players and he needs an ankle operation,” Potter said.

“Matt Diskin got flipped over and landed on his shoulder and he’ll need an operation as well.

“It’s unfortunate to lose two of our top-liners for at least three months.

“We were saying a week ago that we were starting to get players back and we lose five in one match so we’re back to where we started.

“It’s the nature of a contact sport but it’s happening to us just a little too much at the moment.

“It puts a bit of a dent in us but we’ll fill the void.”

Potter is likely to bring in Adam O’Brien, Danny Addy, Tom Olbison and Ian Sibbit for Bradford’s next match, at home to Castleford on Monday night.