So correct me if I'm wrong but Nishikori qualifies for London with any Raonic loss(which might come to Federer now). Ferrer can only qualify by making it to the final. So...if Roanic loses right now to Federer wouldnt David Ferrer be the play since its a must win if he wants to keep hope alive, and Nishikori has already qualified.
Again if I'm wrong, please correct me. I like Ferrer regardless, he's nails at this tournament. Lost in the final last year to DJokovic and won it in 2012.