THE BREAKDOWN: The secrets of Sunderland's success - the stat that proves Granit Xhaka and Noah Sadiki's extraordinary impact, how they use 'little triangles' in attack and the quality that sets Regis Le Bris apart from the rest
Sunderland clearly did not receive the memo. Promoted sides are not supposed to enjoy Premier League life as much as this, and certainly not a club that has been away for almost a decade.