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Jonathan Mayo is's Draft and prospect expert. He has been a reporter for since 1999.

  • December 11 8:56 PM ET

    More fun with Rule 5 research

    Jim Callis and I are dilligently working on digging up names that seem likely/possible to go in Thursday’s Rule 5 Draft. That list will be live on the site later today. For now, I thought I’d play with the research I did on the Rule 5 Drafts 2006-2013. In a recent post, I talked about […] More»
  • December 10 7:22 PM ET

    Marlins looking for a third baseman? There’s one in their system

    LAKE BUENA VISTA, Fla. — One of the bigger rumors that’s been floating around the lobby here has been that the Marlins are looking to 1. Trade Logan Morrison and/or 2. Bring in a third baseman. Juan Uribe has been mentioned, though he’s reportedly looking for a three-year deal. No specific names have surfaced in […] More»
  • December 09 10:17 PM ET

    Pitching all the rage in the Rule 5

    A couple of days ago, I wrote a preview on the Rule 5 Draft that included some numbers on how many Rule 5 picks since 2006 (when the rules dictating roster protection changed) stuck in the big leagues the following year and/or remained in the big leagues (hint: more than you probably thought). Now here […] More»
  • December 06 9:34 PM ET

    What Erisbel Arruebarruena might bring to an MLB team

    My colleague Jesse Sanchez recently wrote a good story on the next wave of Cuban prospects on its way to Major League Baseball. One of them, who recently defected, is former Cuban National Team shortstop Erisbel Arruebarruena. I just talked to a scout who is in the Dominican Republic watching the 23-year-old Arruebarruena to see […] More»
  • December 04 5:57 PM ET

    A 2014 Mock Draft Top 10

    Our first look at the Class of 2014, a Draft Top 50, is live and ready for your perusal over on Prospect Watch. You can also read Jim Callis’ look at the class and my feature on No. 1 prospect Carlos Rodon over on Just for fun, Jim and I decided to do a […] More»
  • November 20 10:58 PM ET

    AFL favorites: Non-Top 20 edition

    My colleagues Jim Callis (@JimCallisMLB) and Bernie Pleskoff (@BerniePleskoff) have already weighed in on players they liked in the Arizona Fall League who didn’t make’s Top 20 list.  Jim mentioned five players in his blog while Bernie filed two reports, one on outfielder Henry Urrutia and one on lefty Eduardo Rodriguez, both from the […] More»
  • November 02 11:33 PM ET

    Some quick AFL Fall Stars pre-game tidbits

    We’re less than an hour away from this year’s Fall Stars (previously called the Rising Stars Game). You can watch on MLB Network and the game will be streaming on I hope you watch the entire game, but if you’re curious, I’ll be sitting in with Paul Severino and Joe Magrane for the 4th-6th […] More»
  • October 17 4:16 AM ET

    An early thought from the AFL

    I spent last week running around the Arizona Fall League during the opening days of the season. Six games in three days (stay tuned for AFL team reports — video and written — that stemmed from those efforts). While my focus was on getting the 30 interviews we had planned done (check), I was able […] More»
  • October 01 10:30 PM ET

    Remembering a young Buc was in the Pirates clubhouse yesterday, following the pre-Wild Card game workout. In case you missed, it, I came away with a story on what the Pirates might do to contain speedster Billy Hamilton. I also contributed to the Pirates notebook, writing up something on hometown kid Neil Walker savoring this return to the […] More»
  • September 20 1:24 PM ET

    All-Prospect, 2nd Team

    On Monday, Jim Callis and I unveiled our All-Prospect Teams. For a refresher, you can take a look at mine and Jim’s at your leisure. Not surprisingly, the stories generated considerable discussion and debate. And, truthfully, we both had a hard time making decisions in some cases. So we decided we’d come up with a […] More»
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