Castleford faces a nervous wait on Liam Watts after the prop ruptured tendons in his finger in the 28-8 win over Hull KR.

The Tigers knocked off the Robins with Danny Richardson grabbing a try and kicking six goals at Craven Park.

Michael Shenton, James Clare, Mike McMeeken and Richardson all crossed for tries in the victory, with the halfback perfect with the boot.

But Castleford lost key prop Watts in the 16th minute and he did not return.

“He’s ruptured the tendons in his finger,” Tigers coach Daryl Powell said after the game.

“They keep dislocating. It’s not a great injury. He’ll see a hand surgeon tomorrow.”

Watts could be out for six weeks or more if he has torn the tendon off the bone.

Castleford moved to the top of the Super League with the 20-point win, their fourth after five rounds.

Powell admitted his team didn’t start well on Thursday night and but improved in the second half.

“We didn’t start that great,” he said.

“Our kick-chase was a little bit loose, our kicking game was a bit loose and it gave them a sniff. We didn’t have any real control in the first 20, 25 minutes.

“Then we started to bust them up around the ruck. We came out in the second half and have an awesome first set, they get a guy sin-binned and we got the ascendancy.

“It wasn’t our best performance but full of character in the second half. We’ve still got some lessons from today.”

.@DannyRich96, he's finding his groove at @CTRLFC 💯🤩

A try, assist and 100% from the boot in a Man of the Match performance 🙌 #SuperLeague pic.twitter.com/Qb5x8YIjOZ

— Betfred Super League (@SuperLeague) February 28, 2020

The Tigers face Warrington and St Helens in the next fortnight.

Powell is looking forward to the challenge.

“We’re in a good place,” the coach said.

“The boys are good. They’re enjoying what we’re doing. We’ve won four out of five so we’re in a good place.

“We’re not starting great. But our second halves have been awesome. It’s always the double-edged sword.”

Powell was pleased with the display of Richardson, who moved to the Jungle from St Helens in the off-season.

“I thought he defended really well today,” he said.

“That was pleasing to see him handle that physically. He’s playing well. He’s got a little bit of maverick about him, which is great.”