well i didn't see saturdays game (kicks closest fox), but from what i've seen he has been more than adequate. He's made all the routine plays that I can recall, however the only thing is his range maybe a little limited. When edmonds got gunned down by soriano friday night, theriot made a diving play but came up a few inches short. Maybe Izturis would have gotten to it in the infield, maybe not. Overall though, i think he will do just fine defensively.