The world No 1 is unbeaten against his Norwegian opponent. Join Jim Wallace to see if that changes.   20:59 First set: Sinner 3-1 Ruud* Well played Casper Ruud, the Norwegian settles into his game and looks sprightly,

The American followed his runner-up finish at the U.S. Open by beating Alexander Zverev 6-3, 3-6, 7-6 (3) on Saturday to play for the trophy at the ATP Finals.

Jannik Sinner has been the number one in the men's ranking since early June. The decisive moment was the semifinal at the last Roland Garros, which handed him the top spot in the rankings for