it was a bad way to finish for Federer, there was no doubt he should've closed it in set 4 but did everything not to. Starting with 2 consecutive double faults out of the blue after leading 40-0 in that game, and hitting back to Raonic when court was open, very strange indeed.
that final wave to the crowd as he left the court was a bit weird too, like saying goodbye?
for years time has caught on with him, not just now so it's not really a surprise. Then again what do you expect from a guy in his mid 30s? i bet he'd make the best player on seniors tour, since he is just about being qualified age wise.