With every passing test and every passing influential performance, it's getting harder and harder to explain just what Rico Lewis is doing at Manchester City.
From a senior City debut against Bayern Munich, to a start at the Nou Camp against Barcelona, and a host of domestic landmarks in recent weeks in some of English football's most difficult environments. Not to mention a Champions League goal on his first start, still at 17 years old.
Lewis has gone from a youth-teamer called up for City's pre-season tour to get experience, to a player Pep Guardiola relies upon to win a vital Premier League game at Chelsea. And Guardiola's post-match praise ramped up a notch at Stamford Bridge with a comparison of the highest order.
