4) Arsenal
Mourinho’s favourite opposition is Arsenal. He is unbeaten against the Gunners in eleven Premier League games by winning five and drawing six of those. The former Inter Milan and Real Madrid manager has been a constant thorn for Arsenal. No matter how bad his Chelsea team may be, beating Arsenal seems to be no issue for him.
Mourinho has such a healthy record against Arsenal, it led to him having a less than poor relationship with Arsenal coach Arsene Wenger, whom he famously called a specialist in failure. The pair have shared a tumultuous relationship with as was evident when Arsene Wenger shoved the Chelsea manager during a match which Mourinho won.
His favourite game against Arsenal has to be the game in which Chelsea beat Arsenal 6-0 at home during Wenger’s 1000th game in charge at Arsenal. Although Mourinho started the 2015/16 season poorly, he did manage to beat Arsenal 2-0 controversially at home.