After guiding the Upton Park club to an underwhelming bottom-place finish in the Premier League table, Grant has deservedly been given his marching orders.
Seeing his side lack complete mental resolve, Grant's calamitous time was up after West Ham surrendered a two-goal lead away at Wigan Athletic to lose 3-2 and confirm their relegation in 20th place.
A brace from Demba Ba teased the Hammers fans and the fate of their team's lacklustre boss, before reality sunk in and a Charles N'Zogbia-inspired performance saw Roberto Martinez and his Wigan side retain hope of Premier League survival.
In a clichéd way, that game summed up West Ham's season under Avram Grant: loads of promise, but no results, little teamwork and a complete lack of mental strength.
Considered one of the most monotonous and uninspiring characters in football, and said to look like a personified slug, Grant's total lack of charisma seems to have been his hamartia.
Whilst outsiders won't know what goes on in the West Ham dressing room, it seems clear from Sunday's result and that of many matches throughout the season, Avram Grant is incapable of inspiring his players.
At 2-0 up, one would have thought the Hammers would've gone into the second half of their D-Day game full of confidence and belief they could claw their way to Premier League survival.
Instead, they emerged a side scared at what Wigan would throw at them, with many big game players hiding and unwilling to take responsibility.
Evidently, their Israeli manager couldn't inspire his men to hold onto the comfortable 2-0 win that would keep their survival hopes very much alive.
And it's not even the case that West Ham had shed loads of injuries or have a squad of poor, inexperienced players to put them in such a predicament.
Given the backing to make West Ham United an established Premier League force, Grant brought in the likes of Robbie Keane, Frederic Piquionne, Wayne Bridge, Demba Ba, Victor Obinna (from Serie A giants Inter Milan, no less) and Thomas Hitzlsperger to add to proven, talented names like Scott Parker, Carlton Cole, Matthew Upson, Kieron Dyer, Luis Boa Morte and Robert Green.
On top of that, from their famed academy the Hammers had huge future talents like Jack Collison, Zavon Hines and James Tomkins, who have clearly shown their capability at Premier League level.
As everyone knows, West Ham had a hugely talented squad with players "too good to go down".
When you have that many players with proven talent, no matter how strong their personalities are, relegation shouldn't even be considered an option.
Avram Grant failed to inspire and motivate these players individually, and he failed to get them working as a team; the two main things managers are hired to do.
Tactically, Grant was inept as well, as he either failed to communicate his tactics adequately to his team, or he simply got them wrong in the first place.
Hardly any evidence of the opposition's game was visible in West Ham's performances, with the Hammers seemingly more interested in getting their own tactics wrong first.
Blame there can't even be put on the shoulder's of the opposition scout, as it's Grant's duty to brief his men on their opponent's game play.
Defensively, the Hammers were all over the shop as well, with impact of freshly appointed defensive coach Wally Downes fading away after a few weeks.
And so, at West Ham United, Avram Grant had a wealth of talent at his disposal.
But he failed to get that talent motivated, inspired, determined, with a collection of individuals that looked anything but a cohesive unit.
Chelsea's Carlo Ancelotti may have "the sack" written on his forehead for the past four weeks, but Avram Grant on the other hand, has been a sacked man walking for the past four months.
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