Back to today’s briefing

Story perspectives

Jack Leiter's Pitching Transformation: From Struggles to Success

3/2/2026

46 8 Full Breakdown

Summary

Story summary

Jack Leiter, MLB pitcher, posted a 3.48 ERA in his first 10 starts of the 2025 season.
He posted a 5.54 ERA in his first season and an 8.83 ERA in his big league debut.
He added a sinker and focused on his mental approach.
He is developing a cutter to improve performance against left-handed hitters and sharpen his four-seam fastball, which had a low zone rate last season.

1 of 1

Story summary

Jack Leiter, MLB pitcher, posted a 3.48 ERA in his first 10 starts of the 2025 season.
He posted a 5.54 ERA in his first season and an 8.83 ERA in his big league debut.
He added a sinker and focused on his mental approach.
He is developing a cutter to improve performance against left-handed hitters and sharpen his four-seam fastball, which had a low zone rate last season.