When he lost to Tsonga at Australian Open 2008
Unseeded Frenchman Jo-Wilfried Tsonga booked his place in the Australian Open final outclassing world number two Rafael Nadal 6-2 6-3 6-2.www.eurosport.com
He said this about Tsonga's level
Is not the real level I think. Sure, he can play like this, but not every week. It's impossible.
He was 100% spot on... Tsonga very rarely ever played at that level again... maybe 2011 WIM after he was down 2 sets to love against Roger springs to mind...