West Ham United boss Sam Allardyce fears their Premier League honeymoon period is about to end.
Allardyce knows today's home clash with Arsenal will see an end to their smooth run.
Big Sam said: "We have 11 points from six games so we are delighted that our start has been as fruitful as it has been.
"Arsenal are a top four side. This is a big test for the players and whether they can master the quality of opposition.
"Can they understand what they need to do to get the best chance of a result?
"We will have our game plan and hopefully that will get us a result but that means every player playing at their best.
"Even then, it may not be good enough."