Guardiola wins grudge match, Arsenal leave it late

Pep Guardiola rocked old foe Jose Mourinho as Premier League leaders Manchester City extended their perfect start with a 2-1 win over Manchester United, while Arsenal snatched a dramatic 2-1 victory against Southampton on Saturday. City manager Guardiola inflicted the first defeat of Mourinho's United reign and collected his eighth win in 17 encounters with his nemesis in a pulsating encounter at Old Trafford. Guardiola's side took the lead in a sweet moment of revenge for Kevin De Bruyne, acrim