David Ferrer and Ernests Gulbis have both made the second round of the US Open and for punting purposes they are through to the last 16 of their quarter, in which Nadal is the long odds on favourite.One thing for certain is that Gulbis and Ferrer aren't available at 33/1 and 12/1 respectively to win the 4th quarter.
http://www.puntinplay.com/story/ferrer-and-gulbis-value
Gulbis is scheduled to meet Nadal in the last 16. David Ferrer is seeded to meet last years winner in the last eight.