15 or so years ago the Wall Street Journal had an article about how baseball's biggest long term problem was guaranteed contracts. It may have actually been written in the 90s, but it's been a while. Whatever the exact date, it was certainly written in the time before pitchers getting $30+ million dollars a year. How many of those contracts are really going to work out for the teams? I'd be amazed if you can look back in 10 years and say even one of those contracts was worth it.
And, if Matt Harvey continues to gain strength and pitch as well as he's been pitching, he's also going to be looking for a monster contract after next season. How much are you going to be willing to pay a guy who had 2 potentially career ending surgeries before he hit free agency? $30M a year? $40M a year? I guess you pay your money and you take your chances, but the economics of baseball really don't make sense.
Regarding Tebow, I'm all for him going for cross fit, but love the WWE idea. I don't even care if keeps playing baseball. I just don't understand why anyone cares. He's an almost 30 year old minor league rookie playing in Low A ball right now. I just looked up his stats and he's batting .184 in what is an admittedly very small sample. But, the trend line isn't good. He strikes out 5X more than he walks and in between he's got a smattering of hits. The only thing he has going for him is he's such a physical monster that any time he does manage to get decent wood on the bat the ball is likely to go a long, long way. 2 of his 7 hits so far are homeruns. And, Low A baseball has a lot of bad pitching and guys who are never going to make it to high A, much less AA. But, a guy who whiffs 5X more than he walks is a guy who is having serious problems with pitch recognition. He's never going to make it beyond AA, if he even makes that far (which I doubt).