MLB’s No. 47 prospect Aidan Miller is #ValleyBound Miller, the Phillies No. 2 prospect, is currently finishing up a season with career highs in hits, homers and stolen bases. The 21-year-old was recently promoted to AAA Lehigh Valley where he’s batting .333 in eight games played. Stay tuned to see who else is Valley Bound for the 2025 Fall League season!