Missed opportunities doom Nats, Stammen

DENVER | Of the Washington Nationals' many two-plus-two-equals-five losses this season - the ones that seem to defy logic - few have involved a pitching performance this crafty or fielding this effective in preventing runs. The Nationals have lost plenty of games on a bullpen meltdown or a botched fly ball. But they haven't lost when one of their rookie starters weaves through a hot team and they generate enough opportunities to beat a dominant pitcher. But there's that common denominator: opportunity. That has been a theme of plenty of losses this year, with missed chances to score possibly being ... Email </a