That neither Donaldson nor Tulowitzki, that neither of them appears to be great fielders anymore, those whispers have been out there for a while now.  

So, should be no surprise what we're seeing from these 2 guys on the left side of the infield.  Their play is deteriorating as they age; certainly both are still capable of making plays, even tremendous plays, but on balance, these old grey mares, they ain't what they used to be (repeat 2x).