HEAD coach Joe Barker admitted "discipline killed us" after Titans threw away a winning position against National One rivals Cambridge.
Leading 11-0 at half time with the help of a try from skipper Seb Nagle-Taylor, Rotherham allowed the visitors to take control in the second half, pulling away to win 25-14 on their first ever visit to Clifton Lane.
A length-of-the-field score by Cambridge captain Mike Ayrton turned the game and the visitors went on to run in two more scores and even came close to securing a four-try bonus point late on.
"It was very frustrating," said Barker. "The first half was a good one and we should have taken more points from it and still came in 11-0 up.
"We had more dominance in the first ten minutes of the second half but once they scored their full-length try we never looked like scoring, even from a penalty.
Tom Cotterill launches a Titans attack.
"I don't know if the energy went but we stopped doing what we're good at. We gave penalties away because we were trying to force things rather than sticking to the system that had worked in the first half."
"Disciplined killed us," added Barker. "We stopped defending the maul and didn't have as much dominance in the scrum. We didn't really attack in the second half at all and that's credit to Cambridge also.
"The good thing is that we get the chance to do something about it this weekend. We'll work on it this week and go from there."
Titans will have to assess the fitness of full-back Sam Allan and his replacement Callum Irvine. Allan was forced off with a groin injury on his debut while Irvine was knocked out in making a tackle on Cambridge wing Nana Asiedu.
Despite back-to-back defeats, Rotherham sit eigth in National One, six points behind leaders Blackheath.
They are away to Caldy, in fourth, on Saturday (2pm).
Full match preview and all the latest from the Lane in Friday's Advertiser.
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