He'll be 35 next April and if they sign him to a substantial contract, he'd be expected to play at least 75% of the time. I don't think that's necessarily true. When Miller was signed to his deal, he essentially split time with Moeller 60/40. So I'd imagine something similar would be likely with Zaun. Frankly, I don't think at 35, he'd put up anything close to a .825 OPS playing that often. He had 338 AB's (107 games caught) in 2004 and put up a .760 OPS. He did wear down in 2005 a bit, catching 133 games for .728. Still, even that .728 number is such an upgrade from where we started even 2006 with a Miller/Moeller platoon it's scary. Rivera was fantastic last year, but it's hard to judge that performance. He was great in 142 AB's, but in his previous 200-ish MLB AB's he was quite horrible. I'm definitely not opposed to the idea of three catchers at this point, as it would provide PHing/PRing options for Yost later in games, and Miller has shown that he's pretty much due for some DL time every season, and can really only be counted on for 250-300 ish AB's a season, if that at this point.