Rivera had some bursitis or something; he didn't risk throwing in the offseason, and still it showed up in spring training. And problem is, Torre hasn't exactly used him in save situations.
Torre manages by the same ol' manual, and he can't make adjustments if something goes wrong with TanGorMo, which at this rate, with this workload, they will be rendered useless come postseason. If anything, he should find out if he can trust F-Rod, Proctor (heh?), Embree (mwahaha), and other relievers who've been shelved thus far, NOW, much less the frickin' postseason.
As far as the whole closer-starter-in-one thing, for every John Smoltz, there are two dozens of Eric Gagnes.