Peterborough United are in a strong position to pick up their first points of the season after going into half-time with a 2-0 lead at Hull City.
The hosts could have broken the deadlock in the seventh minute when Robert Koren's cross found James Chester in the box, but the defender's header cleared the crossbar.
Stephen Quinn was a constant threat for Hull. He created an opening for Sone Aluko in the 12th minute, only to watch his teammate miss the target.
Peterborough took a surprise lead on 24 minutes when a composed Emile Sinclair slid the ball past Robert Olejnik in the Hull goal following a catastrophic error by Stephen Quinn.
Bottom club Posh doubled their advantage just before the half-hour mark, and Sinclair was the thorn in Hull's side once again.
The striker hit the back of the net with low stroke after being lined up by George Boyd to give Darren Ferguson's side a 2-0 advantage at the break.