Can they get to the playoffs? Not looking good. Lincecum is allowed one bad start, after all he's done this year. With Lincecum and Cain, they would be a very difficult team to play in a short series, but they have to get there first.
The Rockies magic number is 9, as of today. Not much wiggle room left. Starting tonight? Zito. Ahem. He's actually been generally decent lately, but he's not exactly the guy you want out there.
On the bright side, look at the remaining schedule: 6 against the Snakes (65-85, this is not a good team), 3 against the Cubbies (who seem to be aggressively crumbling), and 3 against the Padres (68-82; they aren't good either). It's an easy schedule, so we can still hope.