While Roberto Osuna is now out of the Astros’ closer job, Ryan Pressly is the new full-time option. Since joining Houston in 2018, Pressly has been dominant. His ERA and FIP both hover around 2.00, while his WHIP sits at 0.922. His ERA is one of the best in baseball, and his strikeout-to-walk ratio is impressive, but the sample size is too small to make Pressly a top prospect in the league.