Mena was placed on the minor-league 7-day injured list with a right forearm strain Tuesday, Jesse Friedman of GoPHNX.com reports.
Mena won't throw for the next eight weeks according to Arizona's farm director Shaun Larkin, likely bringing his 2024 season to an end. The right-hander will finish the year having produced a 4.61 ERA and 1.54 WHIP with 102 strikeouts over 95.2 innings in 19 starts with Triple-A Reno. Additionally, he made his major-league debut July 3 on the road versus the Dodgers, giving up four runs on four hits and three walks while striking out two batters over three innings.