San Diego’s third-rounder in 2018, Miller had an excellent pro debut after signing for a below-slot $500K bonus. He slashed .336/.386/.460 across two levels combined, finishing the season with the team’s Double-A affiliate in the Texas League playoffs.
Miller has an efficient stroke with plus batspeed and barrel control, grading as a potentially above-average hitter who won’t whiff much. His level swing-path and contact-focused approach don’t lend themselves to much power, something that will come into play more if he moves off SS. Miller is more reliable with the glove than he is flashy or overly athletic, and it’s not a sure thing he stays at the 6 through the minors. We love his feel to hit and think he’s the top positional sleeper in one of baseball’s deepest systems. The ceiling is an average regular, and even if no one tool impacts enough to play everyday for a contender, Miller’s well-rounded game gives some floor as a useful role player.