Man don't try to justify talking about our players getting injured. After our history, there's never, ever reason to mention it possibly happening IMHO.
Eventually I think this could be true. But right now they both seem to be PF's. And the way ED is playing at back up C, the minutes are not there. And when Vonleh gets healthy and the way Aminu has stepped up at PF they might have problems with minutes there as well.
I think we went into the playoffs last year seriously hurting at C. If we had Zach, he might have played 36 minutes/game. If one of Davis or Nurk get into foul trouble or miss a game, Zach is going to play in minutes that count (e.g. not garbage time). Or Stotts will play Aminu at C and go small.