Ben Brown, a right‑handed pitcher for the Chicago Cubs, entered the 2025 season under a cloud of uncertainty after a lackluster debut that saw his earned run average hover at 5.92. Despite solid strikeout and walk numbers, the league’s hitters had begun to find his repertoire, leading to a high‑quality contact rate that kept his ERA from dropping.
This year, Brown has rewritten that narrative. A 1.74 ERA now sits atop the National League’s starter statistics, a dramatic swing that reflects not just luck but a series of deliberate mechanical tweaks. The most visible change has been the addition of a sinker to his pitch mix, a pitch that dives below the swing plane of many hitters.
Mechanical Tweaks Fuel Improvement
Brown also slightly increased his usage of a changeup, employing it more often in counts where he needed to keep hitters off balance. Perhaps the most telling adjustment has been the lowering of his arm slot, a move that creates a tighter vertical plane for his fastball and makes the sinker’s downward movement even more pronounced.
The results are evident in the batted‑ball profiles. Hitters are now more often late on Brown’s heater, and his four‑seamer is reaching the ends of bats with greater frequency. Ground‑ball rates have climbed, and the quality of contact on his curveball has slipped, contributing to a whiff rate that hovers just under 50% against left‑handed hitters.
A New Front‑Of‑Rotation Prospect
Beyond the numbers, the shift in Brown’s approach has turned him into a legitimate front‑of‑the‑rotation starter. The combination of a sinking fastball, a deceptive changeup, and a tighter arm slot has limited hard contact, allowing the Cubs to rely on him in high‑leverage situations. As the season progresses, the team watches closely, knowing that Brown’s evolution could anchor a pitching staff eager for a reliable ace.