Actually, it happens all the time. Lleyton gave 100%, like he always has. I'm pretty sure he's more disappointed at losing in the first round than you are. Anyhow, you can support whoever you like. Just remember that every player falls from the top, that's if they're lucky and good enough to make it there in the first place. As long as Lleyton keeps picking himself up off the canvas and keeps trying, his fans will support him.
True, Lleyton is a fighter who always gives 100 %. But for someone who´s consdered to be mentally tough, he´s always lost matches he should have won, and won 5-setters that should have been over in 3. I know he´s far from his glory days, and even playing is an achievement for someone with his injury history. But that´s not an excuse to lose a double break, or blow the chances he had. He had chances to push this one to five sets, failing to do so was all mental.