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Robert Gsellman

Chicago Cubs | RP

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Scouting Report

Updated May 19, 2026

Robert Gasser, a 26-year-old left-handed pitcher for the Milwaukee Brewers, was called up from Triple-A Nashville to make his 2026 MLB debut on May 17, 2026, against the Minnesota Twins. In his season debut, Gasser had a mixed performance, allowing 3 runs (2 earned) on 3 hits with 2 walks and 3 hit batsmen while striking out 3 over 4 innings in a no-decision. Prior to his call-up, he posted a 3.74 ERA, 1.51 WHIP and 32:8 K:BB across 21.2 innings over 6 starts with Triple-A Nashville. Gasser is in his first full season following Tommy John surgery in June 2024. He has control issues to work through as he builds up his innings.

Strengths

  • + Strong strikeout potential demonstrated in minor leagues
  • + Solid MLB track record with 2.67 ERA and 1.13 WHIP across 7 career starts (33.2 innings)
  • + Successfully returning from Tommy John surgery
  • + Called up to make important rotation start for Brewers

Weaknesses

  • - Poor control with 3 hit batsmen in season debut
  • - 8 batters plunked across 8 career MLB appearances
  • - Elevated ERA (3.74) and WHIP (1.51) in Triple-A before call-up
  • - Shaky season debut performance with 2 walks in 4 innings
  • - Still building up innings in first full season post-surgery

Injury Status: day-to-day

About

Robert Gsellman is a rp for the Chicago Cubs.

Player Overview

Position

RP

Team

Chicago Cubs