Love the avatar (and I bet cwebb will too)!
(kudos to menyak here)
Vazquez pitched 9 innings, but when he left the game, it was still tied 3-3 (one of the runs he gave up was unearned). The game-winning run only scored in the 15th, when Tucker was pitching.
Yeah, it's annoying when a pitcher does well and doesn't get the win, either because his team doesn't score a lot of runs or, even worse, because his bullpen implodes (owners of Marlins starters know what I mean). It generally all evens out in the end, though...
And you're right - the Expos' situation isn't that great (au revoir Montreal, hello DC?), but they're not bad at the moment, sitting pretty atop the NL East.