Ok goody, this argument again.
Sure it takes a special mentality to close. Is that any different than the mentality it takes to start or set up or perform middle relief? I do not think pitchers who blow the lead in the 7th inning laugh it off and tell their teammates that they have their work cut out for them. (And contrary to "closer mentality" logic, a blown save is not automatically a loss. Many of them simply tie the score.)
If it takes a special mentality to close because the game is on the line, isn't it also on the line for the hitters? After all, iof they fail, their team loses. Doesn't that offset the "closing pressure"? Or if all the pressure is on the closer, then that means there is no pressure on the hitters, and therefore there is no such thing as a clutch hitter. (Oh no!! I went there.)
I think any pitcher capable of making the majors has to have a certain mentality, regardless of roles. (Hitters, too.) And pitchers (and hitters) who do not have it struggle to make the majors or struggle to stay there. The minors are littered with mega-talented arms capable of topping 100 mph who never get more than a September call up. Heck, some never get out of A ball. And of these arms, some of them simply lack the mental make up to handle the game at the next level, and that is why they peak where they peak. Rick Ankiel was a prime example, as his mental makeup was so bad, he changed to the outfield and gave up pitching altogether. (I remember once on MLB2N during Ankiel's struggles, Tim Kurjikian made the incredibly prophetic statement "If Ankiel continues to struggle pitching, he can always switch to outfield because he is such a good hitter." Wow. Yes, he really said that.)
But the analytic strategy is simple: if your closer is your best reliever - and he usually is - use him against the best hitters. If the 4-5-6 hitters are due up in the 8th, why are you not using your best pitcher? And why are you saving your best for the 7-8-9 hitters in the 9th? The "opener" strategy was based on this logic, because as the game is unfolding, you do not always know who will be due up in the 9th, but you do always know who is due up in the first. So use one of your better if not your best arms then and take away one trip through the lineup for the opposing best hitters...