#1 His teams make fortresses of their home stadiums
Between February 2002, a month into his time at Porto, through to April 2011, at Real Madrid, Mourinho put together a run of 150 league home matches without defeat, encompassing 38 matches at Porto, 60 with Chelsea and 14 with Real Madrid. Sporting Gijon broke that run with a 1-0 win at the Bernabeu on 2nd April 2011.
A subsequent 45-match unbeaten streak on home territory, which started at Real Madrid and continued into his second spell at Chelsea, was brought to an end by a 2-1 defeat at the hands of Sunderland in April 2014.
His Manchester United side drew far too many of their home matches in his first year in charge last season but even so, at time of writing are still on a 21-match unbeaten run at Old Trafford in league play. Going away and winning against a Mourinho side is never an easy task.