Andy Roddick of USA watches the men's singles first round match between Novak Djokovic of Serbia and Nikolay Davydenko of Russia during the Barclays ATP World Tour Finals at the O2 Arena on November 23, 2009 in London, England.
from andyroddick on twitter: its an unreal event that has been put together at the O2.... i really miss playing but it was good being around the energy of it again
Round Robin Day 3 Order of Play
Centre Court – start 12:30 pm
Bhupathi/Knowles vs. Fyrstenberg/Matkowski
Not Before 2:15 pm
 J del Potro (ARG) vs  F Verdasco (ESP)
At 7:00 pm
Nestor/Zimonjic vs. Cermak/Mertinak
Not Before 8:45 pm
 R Federer (SUI) vs.  A Murray (GBR)
Serbia's Novak Djokovic, right, swaps shirts with Russia's Nikolay Davydenko, left, after their ATP World Tour Finals tennis match at the O2 Arena in London, Monday Nov. 23, 2009.
Group B Singles
R Söderling (SWE) d R Nadal (ESP) 64 64
N Djokovic (SRB) d N Davydenko (RUS) 36 64 75
As I said in the comments, Rafa is barely on the court these days. I do enjoy Söderling's "rude power" and wouldn't mind seeing him doing well here but I don't think he's going to win another match.
Djoke and Kolya really know how to turn a single match into three. Some of those games were 15 minutes. Got a bit too nervy for me at the end, but it was a well-fought war.
Group B Doubles
M Mirnyi (BLR) / A Ram (BLR) d B Bryan (USA) / M Bryan (USA) 64 64
L Kubot (POL) / O Marach (AUT) d L Dlouhy (CZE) / L Paes (IND) 63 76(3)