Jim Callis, Jonathan Mayo have plenty to consider with the release of rosters for the Arizona Fall League-- "a prospect Shangri-La," in the words of Mayo -- with 17 of the Top 100 Prospects headed to the desert. Also up for discussion are the unusual number of quality pitchers destined for the AFL and a couple of the prospects -- namely the Giants' Marco Luciano and the Padres' CJ Abrams -- who Callis and Mayo are most excited to see there. A mock draft of AFL talent follows.

They also break down which rookies could make a huge difference in the MLB postseason, with Callis taking a look at the Giants' Camilo Doval and the Astros' Luis Garcia, and Mayo making a bold prediction for the Rays' Wander Franco.

The end-of-season Rookie Power Rankings are also discussed, and the duo takes a couple questions from the mailbag, including one about top-ranked shortstops like Bobby Witt Jr.

On the MLB Pipeline Podcast, Sam Dykstra, Jim Callis and Jonathan Mayo are your tour guides through all the unfolding stories and breaking news of baseball's top prospects. Each week, you'll find out about the stars of tomorrow from the guys who know today. Download, subscribe and help others find the show by leaving a rating and review on iTunes or your favorite platform.