With help of unsung heroes, Braves seek sweep vs. Nats

(Photo credit: Brett Davis-USA TODAY Sports)
Three players picked up by the Atlanta Braves as injury replacements have been instrumental in keeping the team in postseason contention.

The Braves, who will try to complete a three-game series sweep against the visiting Washington Nationals on Sunday afternoon, have gotten timely production from second baseman Whit Merrifield, right fielder Ramon Laureano and third baseman G