A discussion with and dissection of the approach and repertoire of the M’s rookie bullpen standout. The success of the 2022 Seattle Mariners has flowed in large part through their rookie sensation, Julio Rodríguez, and their once-more spectacular bullpen. The 2021 core returned many of its most important pieces, namely Paul Sewald, Diego Castillo, Andrés Muñoz, and Erik Swanson, but trades and injuries have sapped them of several vital performances from their previous season, creating openings for players like 28-year-old rookie RHP Penn Murfee. The sidearming righty was selected 988th overall in 2018, in a round (33rd) that no longer…