his games is high risk and have very little margin for error, he needs to be at the very top of his game as well as tougher mental strength to do well. Notice during the 09 AO run, and some other losing match later against top 10, it's all extremely close.
For his type of FH technique, it's either
1)keeping the ball in play,in which he'll either cough up some short ball or letting his opponent dictates play.
2)playing ultra aggressive, in which his error count will go hand in hand with winner.
In essence, there's no middle ground for Verdasco, safe yet aggressive doesn't exist in the game.
This, coupled with some shot selection matter complicates stuff further.