Achieving promotion the season after relegation from the Premier League is notoriously difficult. Indeed, only nine clubs have achieved it in the past 11 years, and Birmingham City are the only club to have done it more than once - proving how hard it is. Here is a list of seven clubs who didn't manage to bounce straight back up, but instead have found themselves going in the opposite direction... 2008 FA Cup winners Portsmouth were relegated to the Championship in 2010 after seven seasons...
After playing in 18 of the Premier League's first 20 editions, Blackburn were relegated in 2012 and have since been unable to escape the Championship, finishing 17th, eighth, ninth, and 15th.
For a club that won the Premier League in 1995, such a demise has been heartbreaking for fans. They are currently languishing in the lower reaches of England's second tier and may fall even further come the end of the season.
Wigan Athletic got promoted to Premier League for the first time in their history in 2005, and finished 10th in 2006 to record their best ever finish. After 8 years in the top flight, Wigan became the only team to be relegated from the Premier League and win the FA Cup in the same season in 2013.
Winning the FA Cup saw them qualify for the group stages of the Europa League for the 2014/15 campaign. They finished bottom of their group though, winning only once against Slovenian side Maribor. In the same season they ended up 5th in the Championship, losing in the play-off semi-final to eventual winners Queens Park Rangers.
The Latics were relegated to League 1 in 2015 and achieved immediate promotion back to the Championship. Currently sitting in the relegation places of the Championship, Wigan will be desperate to avoid the drop again.
2006 Championship runners up Sheffield United were relegated straight back down after finishing 18th in the Premier League in 2007. They were relegated on goal difference after finishing equal on points with Wigan.
Losing the play-off final in 2009 triggered a downward spiral that saw the Blades relegated to League 1 in 2011, where they have remained since and are in their sixth consecutive season.
They are, however, top of the league this season, and look a good bet to return to the Championship.
Ian Holloway led Blackpool to the Championship play-off title in 2010 - beating Cardiff 3-2 in the final at Wembley - meaning Blackpool were to play in the Premier League for the first time in their history.
Blackpool could only muster one season in the top flight as they finished in 19th place, one point from safety. Four seasons in the Championship followed, but back-to-back relegations meant that the Seasiders found themselves in League 2 at the start of the 2016/17 campaign.
An average of 2 managers a season since Ian Holloway's departure in 2012 led to disappointing results. The club are now managed by Gary Bowyer, and find themselves chasing a playoff place in the fourth tier.
11 consecutive years in the top-flight ended for Bolton when they were relegated, finishing 18th in 2012. This triggered a steady decline in fortunes as they finished seventh, 14th, 18th, and 24th in the Championship, relegating them to League 1.
The Trotters are chasing promotion back to the Championship this season, and are looking to earn it automatically.
Finishing seventh in the Premier League in 2004 was as good as it got for Charlton fans, as they now find themselves mid-table in League 1. After 6 straight seasons in the Premier League under Alan Curbishley, the club faltered when he left in 2006, and were relegated in 2007.
Charlton haven't been able to find any stability since and found themselves relegated again in 2009 after finishing bottom of the Championship. Three seasons in League 1 followed and promotion back to the Championship was sealed when they won the league in 2012.
Three more seasons of mid table anguish for fans led to another relegation back to League 1, where they remain today.
2008 FA Cup winners Portsmouth were relegated to the Championship in 2010 after seven seasons mixing it with the big guns. In their first season back in the Championship they finished 16th, followed by relegation the next season. Their first season in League 1 saw them relegated for the second season in a row.
Two seasons of mid-table obscurity followed in League 2 before losing to Plymouth Argyle in the 2016 play-off semi-final. This term, Pompey are challenging for promotion again.