The Texas Rangers secured a crucial three-game sweep of the Seattle Mariners in the tight AL West by hanging on through a rough patch from a bullpen that not long ago threatened to derail a promising season. Suddenly 2 1/2 games up in the division after a 9-8 victory in their home finale Sunday, the Rangers hit the road for the final seven games looking to wrap up the No. 2 seed in the American League playoffs and home-field advantage in a Division Series. “I packed like a normal seven-day trip,” Texas starter Nathan Eovaldi said.