Rio Ferdinand was left bleeding from the head after being hit by an object thrown from the crowd during Manchester United's 3-2 win at Manchester City.
A coin-sized object was seen bouncing off Ferdinand's head on television replays of the incident.
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People "would not want" international footballer Jerome Boateng as their neighbour, according to a German politician.
The paralympian posted a time of two minutes and 57 seconds on Sunday.
The 17-year-old posted a supportive Instagram message accompanied by a childhood photo.