American will play with the the SX 300 frame.
Wimbledon winner is sixth member of Top 10 to opt out of New York.
World No. 7 is heading for New York.
Nine-time Rome champion hits with players from Rafa Nadal Academy.
Some late breaking changes to the ATP calendar, most notably the Rome Masters finds a new week.
Former No. 1 on fine-tuning and flooring it.
The 2004 US Open champion cites Coronavirus safety concerns in opting out.
