www.cnbc.com — We wake up this morning to find out that Tiger Woods, who obviously isn't playing in his own AT&T National, isn't hosting it either. On doctor's orders he needs to rest his left knee, which he just had surgery on. And that includes flying, which causes the knee to swell up. So not only is Tiger not playing, he's not even shaking hands. That's a tough pill to swallow for sponsors, who I can't ...