The 6-foot-1, 205-pound infielder shifted to third base as he physically matured in high school, but when the Phillies selected MLB’s No. 32 prospect in the first round of the 2023 Draft, they announced him as a shortstop.
While most scouts thought he’d have to switch back to the hot corner eventually, Miller has defied expectations by playing his entire pro career at short (aside from a handful of games at DH). And after a strong 2025 season between Double-A Reading and Triple-A Lehigh Valley, the 21-year-old — now the Phillies’ top hitting prospect — appears more likely than ever to stick at the 6.