Not only was Arsenal's loss to Chelsea at the Emirates on Sunday a massive blow to their title hopes, but it also ended one of the more bizarre records in recent memory.
Midfielder Mathieu Flamini, on his second stint at Arsenal, had never lost a match he started at the Emirates Stadium prior to a Diego Costa-led Chelsea win over 10-man Arsenal.
He's now played 54 games at the Emirates: won 37, drawn 16 and lost once.
The defensive midfielder didn't enjoy his best display in his role, either, spurning a handful of chances as Arsenal searched for an equaliser after Costa put the visitors ahead in the first half.