Sunderland began their pre-season exploits under new manager Simon Grayson with a comfortable 3-0 win at Livingston.
Wahbi Khazri opened the scoring for the hosts on 20 minutes as he struck low to beat Livingston goalkeeper Neil Alexander.
Joel Asoro came off the bench to double the lead on 76 minutes before Jeremain Lens, on loan at Fenerbahce last season, fired home a sensational 25-yard strike in the final minute.