Drafted: 1st Round, 43rd Overall 2010 First-Year Player Draft by the Seattle Mariners out of Yucaipa H.S. (CA).
- Baseball Reference
- Fan Graphs
Career Minor League Statistics
Walker pitching for the Double-A Jackson Generals:
- Jan 25/2011: Top 10 Prospects: The Seattle Mariners, by Marc Hulet @ FanGraphs.com