How the Pirates' Mitch Keller transformed himself from one of MLB's worst pitchers - The Athletic
2021 Preseason Top 100 Prospects List, by Tieran Alexander
Identifying baseball pitch types in 2023: A modern field guide to MLB's diversifying arsenals
Identifying baseball pitch types in 2023: A modern field guide to MLB's diversifying arsenals
Breaking: Pittsburgh Pirates Trade Clay Holmes to Yankees
MLB offseason tracker: Blue Jays add Chad Green to bullpen MLB - Bally Sports
Pirates lefty Sam Howard has developed into a reliever at the ready out of bullpen
Pirates reliever Clay Holmes finds confidence in pitch repertoire, scoreless streak