I'm not sure I get this "Andy is the underdog" stuff at all. I;ve read a lot about Ferrer being great on clay, but his record doesn't seem particularly special.
Correct. In his last 11 attempts at Rolland Garros the best Ferrer has done is reach the quarterfinals. He's done that 3 times now. I think Andy has a stronger record here, certainly in the last 5 years. Andy has a semi-final and 2 quarter-final appearances to his name.
Ferrer is Nadal-lite. He's even more one dimensional though and has nowhere near the power of Nadal.
Another point being made is the courts here are playing more and more like hard courts. Ideally we probably want the courts dry and hot for wednesday. I think its to get warmer but showers are forecast for wednesday. I'll still take Andy to win in 3.