Some of last season's top performers have been amongst this season's worst.
So, which players have regressed most this season?
Goalkeeper: Joe Hart | Manchester City
From being the rock behind one of the tightest defences last season to making schoolboy errors this season, Hart's fall from Grace has been quick.
Lack of competition at club and country level might be leading to some complacency in this Englishman, but with age on his side should improve next season.
Right-back: Bacary Sagna | Arsenal
The inspiration behind writing this list. He was one of the best right-backs in the Premier League. and last summer he had expressed his disappointment with Arsenal selling their top players. But since the start of this season his form has been woeful.
With Carl Jenkinson coming on leaps and bounds, the future might lie elsewhere for this Frenchman.
Centre-back: Martin Skrtel | Liverpool
One of Liverpool's best performers last season. Liverpool received bids for him from Russian clubs but they resisted it and instead offered him an improved contract. If you lose your place in starting place to a 35-year-old veteran it reflects on the season you've had.
Liverpool will be happy to sell him this summer.
Centre-back: Anton Ferdinand | QPR
Even though he was in the news for the racism scandal with John Terry, he had a pretty solid season with QPR. He was their first choice centreback and started 31 games last season. This season the number is down to 13 and he was loaned out to Bursaspor where he has made only 3 appearances. He might still end playing for QPR in championship though.
Left-back: Andre Santos | Arsenal
Andre Santos was seen as a panic buy by Arsene Wenger. He played in 21 games last season and even scored three goals. With injury problems to Kieran Gibbs he became the first-choice centre-back and also scored a memorable goal against Chelsea at Stamford Bridge.
But this season he was a standing joke before being shipped off to Gremio. Exchanging shirts with Robin van Persie earlier this season didn't endear him to the fans either.
Right-wing: Antonio Valencia | Manchester United
The current Players' Player of the Year at Manchester United, Valencia had a brilliant season last year even though it was blighted by injuries.
He also scored some crucial goals, such as the one against Blackburn. But this season he seems to have regressed so much. Unable to even beat a single player in a one-on-one situation, his future at Manchester United is in jeopardy now.
Centre-midfielder: Chieck Tiote | Newcastle
He was heralded as the solution to Manchester United's midfield problem. His all-action game play was adored as Newcastle had a fairytale run in the Premier League last season. From there he has gone on to the extent of being booed by his own fans. Something seems to be amiss and neither him nor manager Alan Pardew seem able to fix it.
Centre-midfielder: Scott Parker | Tottenham
He was Tottenham's Player of the Year last season. His heart and commitment won him a lot of plaudits. With him being part of under-performing teams all his career, his move to Tottenham was seen as the one where he could play in European competitions again.
This season has been a mixed season for him: his injury lay-off saw him lose his starting position to Sandro. Due to Sanddro's injury he got back into the team, but he still doesn't seem to be performing to last season's standards.
Left-wing: Florent Malouda | Chelsea
Many will be surprised to know that Malouda is still a Chelsea player. The experienced winger who made 42 appearances last season and also played for France at Euro 2012 was suddenly dropped. For no reason, he has been made to train with the junior teams without being sold nor loaned - Chelsea have been paying Malouda to not play this season. Strange indeed.
Striker: Grant Holt | Norwich City
Norwich were very happy when Holt announced that he was staying in Norwich, but that was after he said he wanted to leave and ended up signing a bumper new deal.
This season he has been playing with the air of a man who has already achieved all his life's goal. His five goals in 30 appearances is a meagre return and has seen Norwich go out and buy more strikers.
Striker: Danny Welbeck | Manchester United
When the best compliment you can give a striker is that he "works hard", that means his returns in front of goals are missing. From 12 goals last season he has fallen down to just two goals this term.
His contribution in other parts of the field is good, but a striker who does not score goals is no striker.
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