Vargas will undergo Tommy John surgery this week, Thomas Harding of MLB.com reports.
The 19-year-old is part of a trio of Rockies pitching prospects that need to go under the knife (Gabriel Hughes and Jackson Cox being the others). Vargas made 13 starts with Single-A Fresno this season, holding a 4.22 ERA and 69:24 K:BB over 64 innings. He probably won't pitch in games again until 2025.
