Chelsea will begin 2015 sitting firmly atop of the Premier League table.
However, despite a year that has seen them become a force to be reckoned with under Jose Mourinho, they have still endured a difficult time in some departments this term.
They missed out on a Premier League title to Manchester City back in May, with a surprising home defeat against Sunderland denting their chances of winning the league in Mourinho's first season back at the club.
Here are the five worst moments of the year for Chelsea, results that could spur them on to success on all fronts this year.
Click the 'Begin Slideshow' button below to work your way through the list, and feel free to add any suggestions of your own in the comment box provided...