The Mariners may or may not end up as a finalist in the Josh Hamilton sweepstakes. Time will tell. They certainly should talk to Hamilton and take a shot at him. He is rumored to want 7 years and $175 million, which would be a hefty investment. Of course, prices tend to come down in negotiations, so he probably won't cost that much. Fangraphs contract crowdsourcing results predict a 5 year, $100 million contract for Hamilton when all is said and done...still a hefty investment.
Some people worry about Hamilton's past drug abuse and how much that may have aged his body. However, there are some important on-the-field concerns too.
Hamilton's skillset is interesting and problematic. He is basically an average (at best) outfielder with a prodigious power bat but a violent approach at the plate. He doesn't walk much, strikes out a bunch, but crushes the ball when he makes contact. Hamilton has been very productive with this skillset, but once his power goes, so does most of his value.
My gut told me that a player with Josh Hamilton's skillset, at 31 years old, is not a good long-term investment. I wondered if I could find some historical comparison I could make to support or refute my gut though.