The Hammers had picked up a brilliant 31 points before Christmas and were sitting pretty in the Champions League places.
While most doubted their ability to retain that top four place, the East Londoners were still being tipped to battle for a place in the top six. But the season capitulated to what resembled relegation form after Allardyce rested a host of players in the 2-0 away defeat to Chelsea on Boxing Day.
Since then the Hammers have struggled for form, goals and wins, picking up three points for only the third time since that day in the 1-0 victory over Burnley on Saturday.
But the Hammers even made hard work of that win against a side who were down to 10 men for 70 minutes.
A large section of West Ham fans wanted Allardyce out before the start of the season. They were fed up after a painful campaign battling relegation the season before and playing some turgid football along the way.
But the Irons' flying start to the new season, after Allardyce was told in no uncertain terms by co-owners David Sullivan and David Gold to play more entertaining football, lifted some of that pressure on the 60-year-old.
The pressure has intensified again, though, as the Hammers have picked up just 16 points in a second half of the season described as 'disappointing' by Sullivan himself.
Despite endless speculation that Allardyce is on his way out of the club, West Ham's owners have stuck steadfastly to their club policy of only discussing the manager's future at the end of the season.
And Allardyce has seemingly blamed the uncertainty created by that particular policy for his side's struggles.
In answering a question about the desperate form of John Carver's Newcastle, Allardyce has subtly suggested the uncertainty at St James Park - where the ownership have been equally non-committal on their manager - is to blame.
He told the Daily Star: "They (the players) might look at you and say: 'Well you are probably not going to be here next season'.
"That is a dangerous thing for a football club. That is a hugely difficult job as you cannot give your players the discipline they need."