It’s unlikely that either of these two young pitchers will have a real shot at earning a 2020 call-up. The move is probably intended to get them some work in the absence of a minor-league season.
Winn is a well-known prospect already, having landed with the Rangers with the 15th overall pick in the 2018 draft. The 20-year-old ran into some struggles at the Class A level in 2019, pitching to a 4.46 ERA with 8.5 K/9, 5.1 BB/9, and a 46.5% groundball rate in 68 2/3 innings. But those numbers reflected a rough early showing as well as a much more promising run in his final dozen starts of the year.
Vanasco, a former 15th-round pick, has drawn more attention for his work in the Texas organization than his promise upon entry. He showed intriguing arm strength and strikeout ability in low-A and Class A play last year, running up better than 13 strikeouts per nine while allowing less than two earned per nine at both levels.