The visitors looked to be in control after restricting the Aussies to 143-5, but dominant performances at the crease by Steve Smith, Brad Haddin and Mitchell Johnson have ensured that they begin day two on 326-6.
"It was a disappointing day for all the bowlers," Saker told Sky Sports News. "We pride ourselves at being able to restrict scoring and we weren't able to do that. We had a chance, but we weren't able to take it.
"We probably bowled a little bit too short, but the game is still alive. We will come back tomorrow, fight to get the four wickets and then hopefully bat really well."
While Saker believes that England could have done better, Broad has said that taking six wickets was a "good effort" from England.