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.

You can watch coverage of this week's ATP finals on the Tennis Channel. Two group matches will be played each day, with the semi-finals then taking place on Saturday, Nov. 16 and the finals on Sunday,

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,