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Pirates think they’ve cracked hitter development, but have to prove it in MLB

To say that the Pittsburgh Pirates saw a number of individual success stories in their minor league pipeline in 2025 would be an understatement.

Konnor Griffin became the best prospect in baseball, practically overnight. Esmerlyn Valdez emerged as a legitimate power threat (a trend that continued when he hit eight homers in his first nine Arizona Fall League games). Termarr Johnson turned a developmental corner with a .326 average and .843 OPS from Aug. 1 through the end of the season. Edward Florentino produced a .948 OPS across two levels.

Callan Moss, acquired from Kansas City at the deadline, led the South Atlantic League in batting (.