LONDON (AP) ― Manchester United stumbled again under new manager David Moyes, allowing a late equalizer against Southampton, and Arsenal maintained its Premier League lead with a 4-1 rout of Norwich.

Adam Lallana scored on a glancing header in the 89th minute, giving Southampton a 1-1 tie at defending champion United.

Robin van Persie had scored in the 26th, pouncing on a rebound after Wayne Rooney’s shot was blocked. Rooney and Van Persie hit the crossbar for eighth-place United (3-3-2), which is eight points behind Arsenal. Arsenal (6-1-1) extended its unbeaten streak to 12 in all competitions as Mesut Ozil scored twice against visiting Norwich and Jack Wilshere and Aaron Ramsey had one goal each.