Bruno Guimaraes was sprung from the bench to set Arsenal on their way to a battling 2-0 win away to Sunderland, with Bukayo Saka adding a penalty deep in added time to ensure the champions' 100% start to the season continues.
The half-time substitute Guimaraes, formerly of Newcastle United, drove a right-footed attempt in off the bar before cupping his ears in front of the home fans.
