Manager Steve Evans thought Rotherham United were deserving of their victory at Brentford.
Mark Bradley's powerful first-half header earned the Millers maximum points.
The Bees rarely looked like breaking down a dogged visiting defence, with no pace on the flanks and little quality with the final ball.
Their only real effort of note after the break came in injury time, but substitute George Saville's piledriver was tipped wide by goalkeeper Scott Shearer.
Evans said: "We did our homework on Brentford. They have great players and a great manager and they probably had more of the ball, but they didn't really test us.
"You know it's never going to be an easy place to come but we knew that if we defended from the top and pressurised them high up the pitch they would find it hard, and we did that brilliantly."
He added: "We dominated Peterborough last week and lost so we knew we had to be on our game to stop the sequence - and we were."