Josh Bard was the only National who really got a hold of the ball on Tuesday night, though he had difficulty corralling this one. (AP Photo/Lenny Ignelzi) Padres 4, Nationals 1: Washington’s bats could barely muster a whimper last night — generating but one run for the second straight evening — and the Nationals lost their fifth straight. Only Josh Bard, who bashed a solo home run in the seventh inning, could manage to…