Age:45
Country:Croatia
Residence: Monte Carlo, Monaco
Turned Pro:1988
"These days, I think 30 is not an old age for tennis players," Berdych said.
Berdych fired his previous coach, Dani Vallverdu, in May and has trained the last two months with Luka Kutanjac.
The 12th-ranked Croat won the U.S. Open in 2014.
''This is a serious thing,'' the Croat said. ''It's worse than taking doping.''
The 6'10" Croat is gunning for compatriot Goran Ivanisevic's ace record.
