Hull Kingston Rovers coach Chris Chester has admitted that his side 'lacked energy' during their defeat to Huddersfield Giants in Super League.
The Robins saw their four-game winning run in all competitions come to an end on Sunday as they were beaten 32-14 at the Galpharm Stadium.
Chester believes that "silly errors" and tiredness cost his side during the match, allowing the hosts to claim the spoils.
"I was really pleased with the effort from us, but we lacked any real energy this afternoon and came up with a few silly errors," he told the club's official website.
"You make errors when you are fatigued and we had to do a lot of defending in that first half and even more in that second half. That's down to us not controlling the ball and two of their tries in the first half came off poor errors. We started the second half in exactly the same fashion."
Hull KR continue their Super League campaign on July 12 when they will make the trip to Salford Red Devils.