There are best-case scenarios and then there’s sweeping the division-leading Astros in four games on their home turf. The odds of winning all four games in Houston were miniscule—around 1–2% depending on which projection you were using. Not only did the Mariners beat three Cy Young hopefuls (and Dallas Keuchel), they got some timely pitching of their own. As amazing and uplifting as this weekend was, the Mariners now face an even more important series in Oakland. They’ve compressed the Astros lead in the West to just four games, now they need to overcome their most important rival in the Wild Card race.