Leiter opposes Gallen in the finale, the rookie's matchup offers a pivot point for Rangers' offense; Leiter's debut-season price and upside give fantasy managers a snapshot of how Texas plans to deploy him down the stretch.

Leiter is slated to start in the Texas-Arizona matinee as Texas turns to his pedigree against a formidable Arizona lineup led by Gallen. The rookie’s showcase here will be a fantasy focus, as he confronts a Diamondbacks offense that has supplied Marte’s late-inning power.

Jack Leiter’s rapid development under Eovaldi’s mentorship signals a high-upside path in Texas’ rotation, offering real fantasy upside as his control and repertoire tighten while the Rangers contend down the stretch.

Leiter joins deGrom and Kelly as Texas’ trusted young arms in the wake of Eovaldi’s injury, contributing innings and a steady presence as the rotation absorbs the workload shift and positions the team for a late-season push.

Leiter has shown strides in his recent starts, delivering improved command and a more repeatable delivery as he navigates a challenging rookie year. The progression hints at a solid floor in the Rangers’ rotation depth and longer-term upside as he refines his arsenal.