I think so many players would sign with their own blood to have the same career of Tomas Berdych.
He will never win a Grand Slam, he has a "one-dimensional" game style, but still...at least one SF in every Slam, he defeated more than once Federer, Djokovic and Murray (in Majors too, Wimbledon, US Open, Roland Garros) and is in the top ten since 2010, almost five years in a row.
Dont get me wrong, he is a "loser"...but one hell of a loser.