Data blog: How quickly do relegated Premier Clubs return to the top flight?
West Ham currently sit in the relegation zone of the Premier League with the same number of points as the other two threatened clubs.
The Irons' survival is made all the more vital with their impending move to the Olympic Stadium. If the worst were to happen, how likely are they to return in 2015?
Check out our graphical analysis below.
Behind The Figures
Teams relegated from the Premier League stand the greatest chance of getting promoted back into the top flight in their first season in the Championship.
Since the start of the first Premier League season there have been 61 individual relegations where teams have had a chance to get promoted, comprising of a total of 34 different teams, 18 of which have been relegated on more than one occasion - Crystal Palace have been relegated an impressive four times.
Looking back over all of the relegations 16, that's 27 per cent of them, have seen teams being promoted on their first try - more than any other season following relegation.
Teams such as Manchester City, Charlton and Newcastle have all managed the achievement while Nottingham Forest, Leicester, West Brom and Birmingham have all done the feat twice.
In the second season following relegation the figure stands at just 12.5 per cent, with seven of the 58 relegated teams to have had two or more seasons to get promoted, doing it in their second attempt.
Things get bleak after that though with just 3.8 per cent and 4 per cent of relegated teams managing promotion in their third and fourth seasons outside the Premier League respectively.
Come the fifth season things begin to improve.
Just over six per cent of relegated teams manage promotion in their fifth season, while the number rises to over 17 per cent after five seasons.
However, there have been a total of 23 times when a team has been relegated from the Premier League never to return.
Leeds United, Sheffield Wednesday, Nottingham Forest, and Oldham are just some of the teams who have yet to bounce back into the Premier League.
43% (15) of the 35 teams to have been relegated from the Premier League have gone on to suffer a further relegation in the immediate five years following their relegation from the top flight.
Portsmouth are the only team to have suffered two relegations in this period.
More teams are relegated from the Championship in the 4th of their immediate five seasons following Premier League relegation.