The Twins’ dream of building some buyer’s momentum ahead of the trade deadline likely died on Sunday. With a x-x loss to the Washington Nationals at Target Field, the Twins fell to 3-6 since returning from the all-star break on July 18, with only a three-game series with the Red Sox between them and the deadline on Thursday evening. Four of those six losses have been to the two worst teams in baseball, Colorado and Washington — although with two wins this weekend, the Nationals pulled closer to the pack in the National League. Alex Call, who drove in a pair of runs in the Nationals’ 9-3 victory on Saturday, hit a two-run single against a drawn-in infield as Washington broke open a tight game with four runs against Travis Adams in the fifth inning.