backhanded conundrums

If Rafael Nadal is right-handed, but plays tennis left-handed does he get the left-handed slightly shorter life expectancy? Or does he just get the good batting average? Does right-handed baller, but left-handed eater/writer LeBron James shop at the leftorium for everything but his sneakers? Do you even need to shop for sneakers when you have an eight-figure (or is it nine?) endorsement with Nike? I think not.