as others have posted, the ranger and dbacks both had similar stretches last year. the cubs are 0.5 games out of a playoff spot, and the teams they're competing with suck too.
i don't expect them to go on a run, but it would not be weird at all if they did. and even if they don't, they could literally player .500 baseball the rest of the way and still be in the WC hunt until the very end.