Just about six months ago, Seattle Sounders and Club León met in the Leagues Cup Final, with the Liga MX team winning 3-2. Since then, the two teams have gone in mostly opposite directions. The Sounders faded down the stretch of their season, while León charged to the Liguilla final. They are going strong in the current season as well. Hosting the first leg should be a small advantage for the Sounders. It lets them attack to start, flowing forward as they do when at the best that hasn’t shown up for a time prolonged by the offseason.