I completely disagree, though I imagine this is a matter that is 100% a matter of opinion. For one thing, Riv isn't supposed to provide analysis of the games, (which the biggest complaint I hear against him is that he doesn't provide insight into the games) because that isn't his job. He provides play-by-play, which basically means he talks about whatever is happening, while Kobe or Jatt provides the more detailed analysis of why stuff is happening. In football they have the same set-up, usually one retired pro and someone who just yells excitedly what is happening. And as for him garbling words that don't make any sense, I have seen him mess up a sentence a few times, but it doesn't bother me as much as it seems to bother you. Anyway I am sorry you don't like his casting, but you asked other peoples opinion on him, so this is mine.