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Jonathan Mayo is an MLB.com Draft and prospect expert. He has been a reporter for MLB.com since 1999.

  • October 14 12:43 AM ET

    We knew him when: Kolten Wong

    With the amount of contributions from rookies the Cardinals are getting, I suppose we could stay with them throughout the rest of their run. Given Kolten Wong’s ninth-inning heroics in Game 2, and the fact that we’ve spoken with the rookie second baseman a TON since his draft year in 2011, he was the obvious […] More»
  • October 08 9:56 PM ET

    When we knew them: Marco Gonzales

    I didn’t want anyone to think that was a one-and-done series. I was just waiting for a good opportunity, and one that was non-Royals after the Mike Moustakas retrospective. Don’t worry, KC fans, I’ll have no problem opening the vault in the ALCS and beyond. Marco Gonzales hasn’t been a professional pitcher for long enough […] More»
  • October 03 2:01 PM ET

    We knew them when: Mike Moustakas

    One of the best things about covering the Minor Leagues and prospects is that you get to know players before most do and then when you see them accomplish things on the big league stage, it’s a whole lot of fun. Sure, not every prospect we cover makes it, but when they do, there’s a […] More»
  • October 01 6:31 PM ET

    A preseason AFL Prospects to Watch Team

    Up on MLBPipeline.com now are Jiim Callis’ and my take on which player and pitcher we’re most excited to see perform in the Arizona Fall League this year. I chose Tim Anderson and C.J. Edwards. Jim went with Byron Buxton and Francellis Montas. Obviously, we both are eager to see more than just those two […] More»
  • September 30 8:27 PM ET

    Bonus Rays prospects: Nos. 21-25

    Better late than never right? The 2104 regular season is in the books and I realized I hadn’t posted my final team’s bonus prospects:  the Tampa Rays. Once upon a time, the Rays’ farm system was the envy of every club. Picking high in the Draft helped, as did some savvy drafting later on. They […] More»
  • September 15 4:17 PM ET

    Bonus Mariners prospects: Nos. 21-25

    The march of bonus prospects goes on. Next up: The Seattle Mariners. As of today, the Mariners are just a game out of a Wild Card spot. While the current big league roster has certainly received a boost from big-time acquisitions like Robinson Cano, there’s also been a lot of help from within. Seager, Miller, […] More»
  • September 10 6:37 PM ET

    Bonus Pirates prospects: Nos. 21-25

    We continue our march through my teams’ 21-25 prospect lists. Next up is the Pirates, a fun system to talk about, and not just because I live in Pittsburgh and get to see these guys when they make it up to the big leagues. Last November in a Pipeline Perspectives piece, I touted the Pirates […] More»
  • September 08 7:20 PM ET

    Phillies bonus prospects Nos. 21-25

    The Phillies, as everyone knows, have a bit of an aging big league roster, with one of the highest average ages in Major League Baseball. The question, of course, is just what help is on the way. The Phillies Top 20 doesn’t provide a ton of immediate future solutions, though Maikel Franco is up now. […] More»
  • September 04 7:21 PM ET

    Bonus Twins prospects: Nos. 21-25

    Next up are the Minnesota Twins, one of the organizations I like writing about the most. I’ve long liked the way they go about their business and their system is one of the better ones in baseball. Even with injuries to the top guys, No. 1 overall prospect Byron Buxton and No. 9 Miguel Sano, […] More»
  • September 02 6:27 PM ET

    Bonus Angels prospects: Nos. 21-25

    It’s time to move on to the Angels. Truth be told, Los Angeles doesn’t have a particularly strong farm system, with 2014 first-round pick Sean Newcomb the only member of the Top 100. Only three in its Top 20 get an overall grade of 50 or better. That being said, they have gotten key contributions […] More»
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