#3 Manchester United
2018 could not end quickly enough for the average Manchester United fan, as the club had descended to such lows that they had become the subject of banter and taunts by rival fans.
One the biggest club in England, United have fallen some way off their perch since the departure of Ferguson, with the team struggling to reestablish itself in the upper echelons of English football.
For all their shortcomings in recent years, 2018 was arguably the nadir, as under Jose Mourinho, United descended to new lows, breaking all sorts of unwanted records almost on a weekly basis, with the brand of negative football played at Old Trafford also coming in for heavy criticism.
There were also numerous cases of disharmony in the side, as Mourinho squabbled with his players, with his feud with Pogba especially gaining negative press. The Portuguese tactician also clashed with the United board and media which made the atmosphere at Old Trafford rather disdainful and hostile.
Expectedly, United terminated Jose Mourinho's contract in December which was Poetic justice, as it offered a chance for the club to start the new year on a clean slate.
There have been massive improvements in the few weeks since Ole Gunnar Solksjaer took over and while United fans would hope that this would spark a return of the feel-good factor to Old Trafford, it takes nothing away from the horror show that characterized their performance in 2018.