"Change it up if you want to keep it up," says the world No. 8 in an Adidas post. (AP Photo)
Tomas Berdych has had a brutal week in the office. A day after his double-bagel loss to David Goffin in Rome, the 30-year-old abruptly fired his coach of a year-and-a-half, Dani Vallverdu. The Czech posted this not-so-cryptic Adidas promotion on Tuesday: