Sean Zerillo notes significant steps backward for Guardians pitcher Tanner Bibee compared to his solid 2024 campaign. Bibee's advanced metrics are troubling this year, evidenced by a 4.74 xERA, 5.31 xFIP, 4.34 botERA, and a drastically reduced strikeout-minus-walk rate (4.8% compared to 20.1% in 2024). The shape of Bibee's fastball has worsened according to Stuff+ ratings, falling from a 92 Stuff+ last season to 81 Stuff+ this year. He's also switched pitch selections, moving away from a strong curveball (109 Stuff+, .309 xwOBA allowed) to a significantly less effective cutter (89 Stuff+, two homers allowed, .666 xwOBA in a limited sample). Zerillo suggests fading Bibee given these worrying signs of regression, change in repertoire, and underlying metrics.