The Spaniard struck 10 minutes before the break to give the Gunners a deserved lead as Black Cats keeper Simon Mignolet turned in another fine display to otherwise keep them at bay.
However, the 62nd-minute dismissal of defender Carl Jenkinson, who was only included after Laurent Koscielny injured himself during the warm-up, for a second bookable offence left the Londoners hanging on in front of a crowd of 46,402.
- Sports & Recreation
- Simon Mignolet
- Carl Jenkinson