I really don't think age is as big a factor as it sometimes can be in ortiz's case..... For one, he looks to be in the best shape of his life , 2nd being a dh is not the most demanding position to play lol...and who cares about his age or the fact that he's a full-time dh, if he can hit .320-30-100 ?? Funny thing if he was 27 no one would have a problem with paying him.....keep in mind we're not talking about a long term contract with Ortiz, he knows that ship has sailed.... But if he continues to hit, would be a huge mistake to not keep him...
And remember, Ortiz has been one of the best 2nd half hitters in MLB the last few yrs.... I don't see how he can get better than what he's doing now, but who knows