Dunlop has become the official ball sponsor for numerous tournaments on the ATP tour and in that capacity has produced, in my opinion, a couple of top quality products. The Dunlop ATP (not to be confused with the inferior Dunlop ATP Championship) is positioned at the top of the range and is now arguably the best ball on the market in terms of feel off the racket (taking over from my previous favourite, the Head ATP, which, since being rebranded the Head Tour, doesn’t seem to be of the same quality). However, very close behind is the Dunlop AO. The AO actually seems to be more durable than the Dunlop ATP on hard courts and is also cheaper. I would therefore argue that, pound-for-pound, the AO is actually the best ball out there, sacrificing only a small amount of feel for added durability and value.