In 2017, Francis Martes appeared to be the future of the Astros pitching rotation. In 2021, Martes walked 23 batters in 14 2/3 minor league innings and was released last week . At one point, I wrote that Martes was "a very important player" on the 2018 Spring Training roster because "Martes represents the best bet" to take a spot in the 2019 or 2020 Astros rotation "after [Forest] Whitley." Today, I not only acknowledge that that take didn't hold up [ editor's note: It really didn't ], but that Martes's release is not a big deal to the future of the Astros. Francis Martes never realized his potential. Martes was a highly rated prospect. In 2016, Baseball America ranked him as the 20th best prospect in baseball. In 2017, he moved up the list, landing at 15th. He made his major league debut in 2017, and looked like he would play an important role on that team shuttling between Houston and the AAA team in Fresno. But then Martes was derai...