11 times Arsene Wenger has tried to defeat Jose Mourinho, 11 times he has failed.
In total, Wenger has lost six and drawn five of those matches against Mourinho, scoring six and conceding 19.
Of course, there has been no love lost between the managers off the pitch too, with Mourinho memorably describing Wenger as both a "voyeur" and a "specialist in failure" over the years.
The match kicks off at Stamford Bridge at 2.05pm on Sunday.
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