Here are Friday’s notable mid- to late-round draft signings, with all slot information coming courtesy of Baseball America…

The Astros announced that they have officially signed fourth-rounder Daniel Mengden. The agreement was first reported earlier this week by Tyler Stafford of the Associated Press and the Texas A&M Battalion (Twitter link). According to Stafford, Mengden’s deal is worth $470K, which is a bit south of the $494,800 slot value of the No. 106 overall selection. The A&M right-hander ranked 143rd on BA’s Top 500 list and 101st on MLB.com’s Top 200. BA notes that Mengden features an above-average slider with a fastball that has touched 95 mph and a changeup that is solid-average to above-average. However, BA also notes that he has dealt with back issues that prevented him from throwing his slider much this past season.