Who is more washed up, Kevin Garnett, Carlos Boozer or Tim Duncan?

I have to say TD,Duncan looks really washed up,especially for the spurs to lose to the grizzlies in the first round.He's not the same Tim Duncan who averages 20 points a game anymore.Carlos Boozer is still a good productive players just like his days in Cleveland and Utah.KG is past prime,and does not average 20 points like he did during his T-Wolves days,but is still a good player.