Not to be too hard on Dolis, but in a perfect world, he's a guy who really ought to be a 6th or 7th inning pitcher or your "down by 2-3 runs" reliever at this point in his career. When you have an 5:11 strikeout to walk ratio, you don't really need to be pitching key innings.
He definitely can't be one of your closers at this point.