If Manchester City scoring seven goals as they racked up their seventh consecutive Premier League win was not ominous enough for their title rivals, there was the sight of Kevin de Bruyne back in scoring form too.
Up until his brilliant two-goal performance in City's 7-0 demolition of Leeds, the 30-year-old Belgian's season had been blighted by illness and injury.
When he had played, he was below his imperious best, but Tuesday's sparkling display was a reminder of how good he is in full flow - and how important he is to his side's title defence.