In their 3-1 win against Southampton this past weekend, Chelsea found themselves 1-0 down at half-time after a very poor first-half display.
They desperately needed someone to up his game and take control of the situation and earn the Blues those points. Well, Chelsea certainly found that man in the second half - Juan Mata.
The Spaniard had recently been linked with a move away from Chelsea in the winter transfer window due to his lack of playing time under manager Jose Mourinho but was given the chance to impress in this league game by his boss.
The 25-year-old's lack of playing time has confused lots of fans as many regard him to be one of the best midfielders in the world.
Ever since the playmaker joined Chelsea at the start of the 2011/12 season, he has made 130 appearances, won the FA Cup, Europa league and Champions league titles and scored 33 goals in his superb two and a half year stay at the London club.
The former Valencia man was also crowned Chelsea player of the year at the end of both of his two seasons with the players player of the year also being presented to him at the end of last season.
He created the most goals out of anyone in the Premier league last season with 12 assists and was also placed in the Premier league team of the year.
Despite less playing time than usual, Mata has still featured in 12 of Chelsea's games this year and has had a world class performance in a couple of those.
One of those was at Arsenal in the Capital One Cup where he completely outplayed the whole Arsenal midfield and scored a brilliant weak foot goal as his side beat their rivals 2-0.
Before this, Mata had already showed his true brilliance when he came on in the Premier league at Tottenham. With the team rightly losing by a goal to nil, Mourinho brought on the fan favourite and in true Juan Mata style, he completely changed the game.
He moved the game to a faster pace and was instantly involved in every Chelsea attack. He showed his defensive qualities too with some great tackles before his stunning free kick delivery was headed in by Chelsea captain John Terry for Chelsea's equaliser.
On to yesterday's performance and the Spanish international proved why he is Chelsea's best player.
He was by far the best player on the pitch and he carried his team forward with a world class display. He created more chances than anyone on the pitch and set up John Terry (again) for Chelsea's second goal.
He is expected to feature in Chelsea's next couple of fixtures and if he plays well in those, he is likely to be a star player for Chelsea again.
Games like yesterday make you realise how stupid Chelsea really would be to let go of their best player and what a talent he really is.
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