What to know

• London, Sep 13: David Raya and Bruno Guimaraes were Arsenal's heroes as the Gunners maintained their 100 per cent start to their Premier League title defence with a hard-fought 2-0 win at Sunderland and went top of the table.Arsenal maintain perfect startAfter...S1
• Arsenal extended a flawless start to their Premier League title defence thanks to Bruno Guimaraes's stunning strike in a 2-0 win over Sunderland, while Chelsea, Liverpool and Tottenham were all held at home on Saturday.S2