The Houston Astros joined the American League West division back in 2013, when the "Los Angeles Angels of Anaheim" were a competent organization. In those days, the Astros were more-or-less the laughing stock of baseball as they tanked their way to top draft picks year-after-year-after-year. In 2014, the Angels made the postseason and things were looking hunky-dory. Meanwhile, in the second year in their new division, the Astros went 70-92 and finished below .500 for the sixth consecutive season. From 2013-2015, the Angels went 30-27 vs. the Astros.
It turns out, those three seasons would be the best the Angels would look against the Astros for 10 years (let's exclude the COVID season).