Castleford's patched-up season took another turn for the worse at Hull KR as they were drubbed 70-12 and also lost star hooker Daryl Clark to what coach Ian Millward fears could be a long-term injury.
The Tigers arrived on Humberside without their three first-choice half-backs through injury and suspension, and left with Clark on crutches after he picked up a knee injury midway through the second half.
It was the last thing Millward needed after a season littered with problems, while events on the field hardly helped the Australian coach, and he said: "We were not up to Super League standard. I take my hat off to Hull KR, but we were poor. It was one of the worst defensive performances I have seen for a long time."
Rovers ran in a club Super League record 70 points, with Michael Dobson kicking a top-flight club record 11 goals. David Hodgson also scored four tries, equalling Dobson's record since Rovers rejoined the Super League in 2007, leaving Millward down and apologetic to his club`s fans.
Millward denied it was anything to do with his missing personnel, though, adding: "It wasn't down to us having our halves out.
"Everyone was quite soft. We didn't stick to our structure and I feel sorry for our fans. But the fans are very intelligent and they don't need me to sugar coat it. They're very loyal, but we need to turn things around."
Hull KR coach Craig Sandercock saw his men run in 12 tries as a warm-up for next weekend's derby with Hull.
Aside from Hodgson's quartet, Shannon McDonnell scored a hat-trick, and Sandercock said: "I'm very pleased. That was the first time we have played for 80 minutes this season.
"They were without their halves but we executed well and it was good to put some points on the board.
"Our defence was very much improved and I was impressed with our discipline. If we show that sort of discipline, it will stand us in good stead in the future. We will back ourselves set for set with any side if we don't give away silly penalties."