Wes Brown and Wayne Rooney scored the two goals for Manchester United.
Cesc Fabregas saved Arsenal with an injury-time goal after a goal by Grant Leadbitter had sent Sunderland in the lead at the Stadium of Light.
Middlesbrough managed to get their first away win in the Premiership in 2009. They won 1-0 away to Wigan, after a late goal by Jeremie Aliadiere.
Roman Bednar scored the goal for West Brom as they overcame Fulham at The Hawthorns.
Sunderland 1-1 Arsenal
West Brom 1-0 Fulham
Wigan 0-1 Middlesbrough
Blackburn 0-2 Manchester United