Sides coached by Jose Mourinho do occasionally lose at home, but it doesn't happen very often.
Currently in his second stint at Chelsea, the Portuguese manager is yet to lose a game at Stamford Bridge. The 4-0 hammering of Tottenham in March marked the 75th game at the ground under Mourinho's guidance in which the Blues had avoided defeat.
The 51-year-old once went nine years without tasting a home defeat in the league.
Sid Lowe, writing in The Guardian, describes the sense of occasion when that incredible record finally came to an end in April, 2011, when Real Madrid lost to Manolo Preciado's Sporting Gijon:
In total, 107 coaches couldn't do it. Manolo Preciado, on the other hand, could.
He was the first man to do it since António Sousa and only the second ever.
Nine years, one month and 10 days later, José Mourinho's mind-blowing record came to an end. Porto, Chelsea, Inter and Real Madrid had not lost in 150 games under him.
He'd not been defeated in a home league game since 23 February 2002, when nine-man Porto lost 3-2 to Beira-Mar. 150 matches, 125 wins and 25 draws, 342 goals scored, 87 conceded.
And then his record ends – even if Marca's José Vicente Hernaez overlooked the presence of Ricardo Carvalho, Sami Khedira, Angel di María, Mesut Ozil, Emmanuel Adebayor and Sergio Canales to claim "this should go down as Pellegrini's loss really; it was his team, not Mourinho's".
And then he goes and loses 1-0 at the Santiago Bernabéu to Sporting Gijon.