Jannik Sinner defends at the ATP Finals, again without losing a set, beating his chief rival #1 Carlos Alcaraz. The final was fine, even quite good at times, albeit a bit momentum-less; but hey, they can’t all be classics. Novak makes some valid points about Sinner’s doping case – yes, well-tread territory to be fair – and gets subtweeted by Darren Cahill for his troubles. Plus, Aryna is displeased with Nike (which itself seems indifferent to tennis), and we take a quick tangent into health care and politics.