Juan Ignacio Martinez conceded his Real Valladolid team made too many errors in their defeat to Sevilla.
The Pucela went down 4-1 to the Rojillos on Sunday to stay in the relegation places.
But the Coach admitted his men were the architects of their own downfall.
“We know that we have not performed,” he told a Press conference. “We have fallen short of our normal leve.
“We played a brilliant game against Barcelona, but we can’t just live off of that win – we made too many errors here.
“Sevilla made us pay dearly for those mistakes. They played well, but we helped them.”