VIDEO: Nadal blasts back three straight Karlovic serves

The Spaniard’s attitude and confidence is on its way back. (AP Photo)

We get it: Rafael Nadal has had a 2015 season to mourn. That’s a byproduct of his own lofty standards in winning 14 major singles titles to date. Even so, he claims his attitude and confidence are better than they have been for many months, this in a year that saw him lose at every major for the first time since 2004. If his fresh resolve is to be believed, consider these Exhibits A through C: