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.

3/7/19: Prospects shining in Spring Training
Spring Training is in full swing, and some of the game’s top prospects are performing quite well on the big league stage. MLB Pipeline's Jim Callis (@JimCallisMLB) and Jonathan Mayo (@jonathanmayo) and Jordan Shusterman of @CespedesBBQ discuss a few top prospects who have stood out in big league camp, including Pittsburgh’s Ke’Bryan Hayes, Boston’s Michael Chavis, Atlanta’s Kyle Wright and Detroit’s Daz Cameron and Casey Mize. Then, Jonathan checks in from Arizona with an update from Mariners camp, where some of the new faces like Justus Sheffield are making a strong impression. Next, the guys turn to the 2019 MLB Draft, and discuss how Oregon State catcher Adley Rutschman compares to recent No. 1 Draft picks and where Cal first baseman Andrew Vaughn, the best hitter in the Draft, is most likely to be picked. Finally, they touch on a few pitchers who have risen up Draft boards early in the season, including college arms Drey Jameson and Jackson Rutledge and high school right-hander Matthew Allan
33 min
3/1/19: The top farm systems in baseball
The San Diego Padres have the No. 1 farm system in baseball. MLB Pipeline’s Jim Callis (@JimCallisMLB) and Jonathan Mayo (@jonathanmayo) and Jordan Shusterman of @CespedesBBQ discuss what made San Diego the obvious top choice, how the system compares to other recent top farm systems and which organizations outside the Top 10 could be on the list at this time next season. Next, they discuss Jim’s Spring Training trip and some of the notable prospects he got to speak to, and who Jonathan is looking forward to seeing and talking to in Arizona. Then, they reflect on the prospect days of Manny Machado and Nolan Arenado, two star third basemen who recently signed historic contracts. Finally, the guys take turns drafting prospects who they think will be making the most noise in 2021.
42 min
2/6/19: Prospects to watch this Spring
Pitchers and catchers report to Spring Training next week. MLB Pipeline’s Jonathan Mayo, Jim Callis and Tim McMaster discuss which prospects they’re most excited to see compete in Major League camp (1:15). Then, Jonathan and Jim draft their favorite prospects outside of the new Top 100 list (8:32).
24 min
1/30/19: Top 100 Prospects
MLB Pipeline’s Top 100 prospect list is out. Is Vladimir Guerrero Jr. the best prospect ever (4:18)? Who’s rising and falling on the list (12:25)? Which teams are dominating the prospect points (24:38)? MLB Pipeline’s Jim Callis (@jimcallisMLB), Jonathan Mayo (@JonathanMayo) and Tim McMaster (@MLB_McMaster) discuss those topics and more on this week’s podcast.
37 min
1/24/19: Hall of Famers when they were prospects
Four players have been voted into Cooperstown. On this week’s podcast, Jim Callis (@JimCallisMLB), Jonathan Mayo (@jonathanmayo) and Tim McMaster (MLB_McMaster) discuss what kind of prospects Mariano Rivera, Roy Halladay, Mike Mussina and Edgar Martinez were (1:12). The guys then continue their trip around the diamond with MLB Pipeline’s Top 10 position lists (11:33).
33 min
1/17/19: Top 10 Prospects - RHP, LHP, C
1/17/19: Top 10 Pitchers and Catchers for 2019: MLB Pipeline is unveiling its Top 10 prospects at each position, starting with pitchers and catchers. On this week’s podcast, Jonathan Mayo (@jonathanmayo), Jim Callis (@JimCallisMLB) and Tim McMaster (@MLB_McMaster) discuss how the lists came together and what stands out with the right-handers (1:10), southpaws (7:10) and backstops (17:46).
26 min
1/10/19: Kyler Murray enters NFL draft, Rookie ...
Athletics 2018 first-round pick Kyler Murray is entering the NFL draft. MLB Pipeline’s Jim Callis (@JimCallisMLB), Jonathan Mayo (@jonathanmayo) and Tim McMaster (@MLB_McMaster) discuss what it means for the Heisman Trophy winner’s baseball career (1:20). Then the guys react to the Braves winning the grievance filed by the MLB Players Association on the behalf of their 2018 first-round pick, Carter Stewart (11:30). Finally, we’ll hear Jonathan’s interviews with some of the top prospects in the game from the 2019 Rookie Career Development Program in Miami (24:48).
45 min
1/2/19: 2019 Prospect Wish List
With some help from Twitter, MLB Pipeline’s Jonathan Mayo (@jonathanmayo) and Jim Callis (@JimCallisMLB) and’s Tim McMaster put together a prospect wish list for 2019 (1:07). The guys also chat about the most improved farm systems of 2018 (24:13).
32 min
12/19/18: The Best Prospect Moments of 2018
The Pipeline podcast takes a look back at the best prospect moments of 2018, from Vladimir Guerrero Jr.’s Olympic Stadium walk-off to the Futures Game and more (). MLB Pipeline’s Jonathan Mayo (@jonathanmayo) and’s Tim McMaster (@MLB_McMaster) also look ahead to 2019 with some prospect New Year’s resolutions (), and they recap the biggest prospects to be traded this offseason ().
34 min
12/11/18: Kyle Tucker on Fortnite, Astros, Wint...
The Podcast heads to Las Vegas for the 2018 Winter Meetings. MLB Pipeline’s Jonathan Mayo (@jonathanmayo) and’s Tim McMaster (@MLB_McMaster) are joined by Astros top prospect Kyle Tucker, who was at the Winter Meetings to participate in a Fortnite tournament (0:23). Jonathan and Tim also talk about teams could still be active at the meetings, and they look ahead to the Rule 5 Draft.
27 min
12/5/18: MLB Pipeline 2019 #1 Draft Prospect Ad...
MLB Pipeline released the 2019 Top 50 Draft Prospect List and Oregon State catcher Adley Rutschman landed in the top spot. Rutschman joined MLB Pipeline's Jim Callis (@JimCallisMLB), Jonathan Mayo (@JonathanMayo) and's Tim McMaster (@MLB_McMaster) to share how he's dealt with expectations and to look ahead to 2019.
42 min
11/28/18: New General Manager Mike Elias
MLB Pipeline's Jonathan Mayo and Jim Callis and's Tim McMaster are joined by new Orioles executive vice president and general manager Mike Elias, who shares some of his plans for the O's organization (0:38). Then Jim and Jonathan discuss the most interesting players available in next month's Rule 5 Draft (15:43). Finally, Tim, Jim and Jonathan discuss Kyler Murray's future in baseball as he makes his case for the Heisman Trophy (25:06).
31 min
11/20/18: Breaking down the James Paxton trade,...
MLB Pipeline’s Jim Callis and’s Tim McMaster break down the haul the Mariners received in the James Paxton trade, highlighted by Justus Sheffield (0:38). You’ll also hear from Buddy Reed, Jordan Yamamoto and Keston Hiura as Jim and Tim recap the Arizona Fall League championship game (12:07)
29 min
11/14/18: Keston Hiura talks Fall League, Antea...
MLB Pipeline’s Jim Callis and Jonathan Mayo, along with’s Tim McMaster, are joined by Brewers top prospect Keston Hiura, who talks Arizona Fall League and the Brewers and participates in the “fastball” segment (:35). Then the guys look ahead to possible 2019 Rookie of the Year candidates (18:29). Finally, they discuss MLB and USA Baseball’s new creation, the PDP League, which will debut next summer (23:42).
29 min
11/7/18: Austin Listi on his big Fall Stars Gam...
MLB Pipeline’s Jonathan Mayo and Jim Callis, along with’s Tim McMaster, are joined by Phillies prospect Austin Listi, who starred in the Arizona Fall League Fall Stars Game with a three-run homer and four RBIs(:38). Listi talks about his big game and his big 2018 season, in which he made it to Double-A Reading. Then the guys talk about USA Baseball U18 National Team Director Matt Blood’s upcoming move to the professional ranks, where he’ll be the Texas Rangers’ farm director (19:15).
25 min
10/31/18: Fall Stars Game preview
MLB Pipeline’s Jim Callis and’s Tim McMaster take a look back at the Red Sox’s run to another championship and the homegrown core that made it happen (:27). Then they look ahead to Saturday’s Fall Stars Game and which players could spin Arizona Fall League success into great rookie campaigns in 2019 (11:01). Finally, Jim and Tim examine to direction of the Marlins in the aftermath of the Mesa brother signings (16:25).
27 min
10/24/18: Prospect Impact on the 2018 World Series
MLB Pipeline's Jim Callis and Jonathan Mayo examine the 2018 World Series rosters for the Boston Red Sox and the Los Angeles Dodgers. They first take a look at the many former top prospects who are playing in the Fall Classic (1:01) before talking about some of the players of humbler beginnings who are having a big impact on their teams (7:42). Later, Jim discusses how impactful the 2011 MLB Draft was on this current Red Sox team (30:12) before he and Jonathan give a final take on what the’ve seen in the Arizona Fall League (34:35). 
38 min
10/18/18: Brady Singer from instructs, Fall Lea...
MLB Pipeline’s Jim Callis and Jonathan Mayo, along with’s Tim McMaster, have the latest prospect news out of Arizona. First, Callis catches up with Royals first-round Draft pick Brady Singer at instructs (:47). Then the guys discuss who has stood out early on in the Fall League (13:42). Finally, they talk about the Marlins accumulating international bonus money in the hope of landing one or both of the Mesa brothers (21:32).
27 min
10/11/18: The Arizona Fall League is underway
MLB Pipeline’s Jonathan Mayo is in Arizona for the start of the 2018 Arizona Fall League season. He sat down with a slew of the game's top prospects including the Astros’ Forrest Whitley (1:27), the Blue Jays’ Cavin Biggio (5:11), the D-backs’ Jazz Chisholm (9:17), the Angels’ Jam Jones (15:19) and the Cubs’ Nico Horner (19:57).
24 min
10/4/18: Top 100 Market Corrections and relivin...
MLB Pipeline’s Jim Callis and Jonathan Mayo, along with’s Tim McMaster, take a look at Pipeline’s latest Market Corrections – who were the biggest risers and fallers on the year-end Top 100 Prospects list? Then the guys take a look at some Arizona Fall League sleepers. The podcast finishes up with a recap of the first annual Pipeline prospect fantasy season.
29 min
9/27/18: Cole Winn returns to talk instructs, f...
MLB Pipeline’s Jonathan Mayo and Jim Callis, along with’s Tim McMaster, are joined by Rangers pitching prospect Cole Winn, who talks about his first pro summer and expectations for instructional league (:33). Then the guys look ahead to the postseason and which rookies will have the biggest impact (18:53). Finally, after the rapid turnarounds of the Braves and A’s this year: Which teams that could have a similar rise in 2019 (24:13)? 
30 min
9/20/18: Buddy Reed on 2018, and his days as a ...
MLB Pipeline’s Jim Callis and Jonathan Mayo, along with’s Tim McMaster, are joined by Padres prospect Buddy Reed, who talks Gators baseball, cheering on teammates and playing eight sports (0:45). national reporter Jesse Sanchez also joins the pod after spending the week in the Dominican Republic for MLB’s inaugural Trainer Partnership Program, a new international showcase (26:48). Jesse also talks about Cuban standout Victor Victor Mesa, who was recently declared eligible to sign with a Major League team (33:20).
40 min
9/13/18: Peter Alonso talks Mets, Gators and ho...
MLB Pipeline’s Jonathan Mayo and Jim Callis, along with’s Tim McMaster, are joined by Mets prospect and Minor League home run co-champ Peter Alonso, who talks about his great 2018 campaign, the loaded Florida Gators teams he played for and dealing with playing in New York City (:45). Then the guys look into a crystal ball to predict MLB’s top 10 prospects a year from now (20:45). They also take a shot at a WAY-too-soon 2018 re-draft (30:17).
34 min
9/6/18: Taylor Trammell joins the pod to talk A...
MLB Pipeline’s Jim Callis and Jonathan Mayo, along with’s Tim McMaster, are joined by Reds prospect Taylor Trammell, who talks playoff baseball, the Arizona Fall League and Georgia vs. Georgia Tech football (1:16). Trammell also fields some Twitter inquiries and, of course, our rapid-fire questions (15:38). Then the guys look back on the great seasons put together by Pipeline Hitter of the Year Vladimir Guerrero Jr. and Pipeline Pitcher of the Year Dylan Cease (25:47).
38 min
8/29/18: Dean Kremer talks trade and Team Israe...
MLB Pipeline’s Jonathan Mayo and’s Tim McMaster are joined by Orioles’ prospect Dean Kremer to talk about his breakout 2018 season, being part of the Manny Machado trade and representing Israel in the World Baseball Classic (:35). Then Pipeline’s Mike Rosenbaum stops by to share what Padres fans should expect to see from Luis Urias, the No.22 prospect in the Pipeline Top 100 (17:00). Finally, Tim and Jonathan look back on the prep summer showcase circuit, focusing on some of the best high school talent in the Draft Class of 2019 (26:53).
35 min