MLB Pipeline

Find out about the stars of tomorrow, from the guys who know today. Jim Callis (@jimcallisMLB) and Jonathan Mayo (@JonathanMayo) are your tour guides for this ride through the unfolding stories & breaking news in Minor League Baseball. From top prospects to scouting executives to farm directors, the MLB Pipeline is jam-packed with exclusive coverage of the minors you can't get anywhere else.

Top 150 Draft Prospects
Jim Callis, Jonathan Mayo and Jason Ratliff dig into the brand-new Top 150 Draft Prospects list, focusing on players who made the biggest jumps and falls, as well as the players as the very top of the list, including fifth-ranked Brooks Lee, who joins the pod on the heels of being ranked No. 5. They also look at some of the hottest hitting prospects in the Minors, including the Dodgers' Michael Busch and the Angels' Jordyn Adams. And they wrap up the show by answering the question of what they think the Orioles should do with the No. 1 overall Draft pick.
61 min
Hot Starts In Majors & Minors
Jim Callis, Jonathan Mayo and Jason Ratliff discuss several players off to blazing beginnings to the Major and Minor League seasons in the latest edition of the Pipeline Podcast. Not only do they break down Seiyo Suzuki, Spencer Strider, Matt Brash and prospects Nolan Gorman and Jordan Brewer, but they also chat with Reds 2020 first-rounder Matt McLain, who needed just seven pitches to hit for the cycle on Sunday. There's also some Draft talk in advance of the new Draft Top 150 list coming out and a dip into the listener mailbag to ponder Japanese sensation Roki Sasaki.
50 min
Big Debuts & the Incredible Steven Kwan
Jim Callis, Jonathan Mayo and Jason Ratliff discuss 2022 rookie debuts on the MLB Pipeline Podcast, looking at the top prospects who impressed with big moments in week one—including Julio Rodriguez's first hit, Hunter Greene’s 7 strikeouts and Steven Kwan’s silly start
59 min
Happy Opening Day (Week)!
Jim Callis, Jonathan Mayo and Jason Ratliff celebrate the start of the 2022 season on the MLB Pipeline Podcast, looking at all the top prospects who made big league Opening Day rosters, starting with No. 1 prospect Bobby Witt Jr. From there, the trio discussed some interesting and surprising Minor League assignments for other Top 100 prospects, broke down Rookie of the Year candidates in each league and finished up, as always, with a question from the Mailbag.
53 min
Opening Day Beckons
On the latest Pipeline Podcast, Jim Callis, Sam Dykstra and Jason Ratliff focus on top prospects who could m
70 min
Digging into the new Top 100 list
With the recent release of the 2022 Top 100 Prospects list, Jim Callis, Sam Dykstra, and Jason Ratliff dive right in, starting at the very top, where there's a new No. 1 prospect in baseball
77 min
Chock Full Of Prospecty Goodness
In perhaps the most jam-packed Pipeline Podcast ever, Jim Callis, Jonathan Mayo and Jason Ratliff find themselves with a lot to break down in the wake of the lockout ending
64 min
Torkelson, Greene, Groshans join the Pipeline pod
With Minor League Spring Training underway, Jim Callis, Jonathan Mayo and Jason Ratliff take a look at prospects in action at camp, and Jonathan checks in from Florida, where he talked to Detroit's dynamic prospect duo of Spencer Torkelson and Riley Greene and Toronto's 2018 first-round pick Jordan Groshans. They also discuss the details of MLB's proposed international draft and predict which players from the 2021 Draft class will reach the Majors first.
51 min
Spring has sprung: Report from Yankees camp
Spring Training is getting going in full force and the Pipeline crew is all over it. Jim Callis, Jonathan Mayo and Jason Ratliff kick things off with what's happening in Florida.
56 min
College Opening Weekend
On this week’s MLB Pipeline Podcast, Jim Callis and Jonathan Mayo dig into the opening weekend of college baseball action, starting with the MLB4 Tournament and extending to top performers such as Jacoby Berry of LSU and Hunter Barco of Florida. They then turn their sites to Minor League prospects and their gloves, discussing the annual All-Defense Team, before finishing up, as always, by answering your questions in the mailbag.
65 min
College baseball begins! And a visit from Andre...
Hall of Famer Andre Dawson joins the show, as Jim Callis, Jonathan Mayo and Jason Ratliff preview the college baseball season and the weekend's MLB4 and Andre Dawson Classic tournaments, which help kick off the '22 campaign, with the latter celebrating Black History Month by showcasing seven Historically Black College and Universities (HBCUs) and their baseball programs. Dawson discusses his time at Florida A&M, being drafted from an HBCU and the honor of having the tournament named after him
54 min
Drafting Prospects For 2023 & Beyond
It's time for a draft on the latest Pipeline Podcast, as Jim Callis, Sam Dykstra and Jonathan Mayo choose 10-man lineups of prospects set to arrive in the Majors in 2023 or later.
68 min
Mailbag Madness
Jim Callis, Jonathan Mayo and Jason Ratliff turn the latest edition of the Pipeline Podcast over to their listeners in an all-mailbag edition
56 min
Back to the Future
With Tuesday's announcement of David Ortiz being voted into the Baseball Hall of Fame, Jim Callis, Jason Ratliff and Jonathan Mayo look back at what Ortiz was like as a prospect and young player.
56 min
International Intrigue
In the wake of the international signing period opening on Saturday, Jim Callis, Jonathan Mayo and Jason Ratliff welcome Jesse Sanchez to the podcast.'s international prospects guru, Sanchez discusses the top players in this year's crop and the challenges of scouting them during the pandemic. Phillies international scouting director Sal Agostinelli joins the gang to discuss the story behind signing All-Star catcher Carlos Ruiz, and then Jesse answers listener questions in an extended mailbag segment
48 min
International Edition With Guest Louie Eljaua
With the opening of the 2021-22 international signing period on the horizon, Jim Callis, Jonathan Mayo and Jason Ratliff discuss some of the top prospects available in this year's class and talk to Cubs vice president of international scouting Louis Eljaua.
56 min
Predicting the new year
In the first Pipeline Podcast of 2022, Jim Callis, Sam Dykstra and Jason Ratliff take a look at the year ahead with a wide range of predictions, including World Series winner, Rookies of the Year, No. 1 overall Draft pick and top farm system at season's end. They also discuss some intriguing big-league debuts on the horizon, note some prospects poised for bounce back years and ponder a question from a listener who wants to know what the Brewers would have to give up to acquire Matt Olson.
62 min
All in the family with Termarr Johnson
Jonathan Mayo and Jason Ratliff break down the brand-new Top 100 Draft Prospects list and welcome in Terrmarr Johnson, who might be the best pure prep hitter in decades and is No. 2 on the Top 100.
66 min
Greg Amsinger and the 2022 Top 100 Draft list
Greg Amsinger and the 2022 Top 100 Draft list
57 min
Looking ahead to the 2022 Draft
In this week's Pipeline Podcast, Jim Callis, Jonathan Mayo and Jason Ratliff take a sneak peek at the 2022 Top 100 Draft prospect rankings, which are set to drop next week.
63 min
Hot Stove: Prospect trades, Draft picks lost & ...
As the offseason action begins to percolate, Jim Callis, Jonathan Mayo and Jason Ratliff discuss the prospects involved in the deals that sent Adam Frazier from San Diego to Seattle and Jacob Stallings from Pittsburgh to Miami, and they look at which teams have lost and gained Draft picks due to free-agent signings. They also review their ranking of the Top 25 prospects in this year's Arizona Fall League as well as some of the circuit's biggest breakouts. The trio wrap up by answering a question about Red Sox slugger Triston Casas.
48 min
Pipeline Podcast: That's a wrap on the AFL
Jim Callis, Jonathan Mayo and Jason Ratliff tie a bow on the 2021 Arizona Fall League by breaking down the championship game and taking a closer look at this year's award winners, including MVP Nelson Velazquez of the Cubs and Pitcher of the Year Owen White of the Rangers. Jim interviews Reds area scout Sean Buckley, who signed NL Rookie of the Year Jonathan India and the guys look at some off-the-radar 40-man roster additions before dipping into the listener mailbag.
75 min
The Fall Stars Come Out
The latest edition of the Pipeline Podcast focuses on the recently completed Fall Stars Game, which showcases the Arizona Fall League's top prospects and performers
79 min
2021 Fall Stars Game
On the latest edition of the Pipeline Podcast, Jim Callis, Jonathan Mayo and Jason Ratliff focus on the highlight of the Arizona Fall League season, the annual Fall Stars Game. Sticking with the Fall League, they discuss the latest players of the week (White Sox infielder Yolbert Sanchez and Pirates right-hander Roansy Contreras) and interview Pirates second baseman Nick Gonzales. They also break down the correlation between top-rated farm systems and World Series champions and dip into the mailbag for a question about another Arizona Fall League star, Cleveland infielder Jose Tena.
58 min
Arizona Fall League excellence
On this week's Pipeline Podcast, Jim Callis, Jonathan Mayo and Jason Ratliff talk about some standout performances from the Fall League, including Top 100 prospect JJ Bleday. Jim interviewed this week's AFL Hitter and Pitcher of the Week, Cubs prospects Nelson Velazquez and Caleb Kilian. After taking a look at prospects playing winter ball in the Dominican Republic, the trio hit the mailbag hard with several fans' questions.
62 min