Draft Signings: Covey, Astin, Guillorme, Aper, Wade

Over the next several weeks, signings from this year's MLB draft will be pouring in. Here's Monday's rundown of significant signings (all slot info courtesy of Baseball America's list of assigned pick values)…

• The Athletics signed fourth-round pick Dylan Covey to a $370K deal, tweets Jim Callis of Baseball America.  The San Diego right-hander was taken by the Brewers with the No. 14 overall pick in 2010 but ultimately didn't sign after being diagnosed with Type 1 diabetes.
• BA's Jim Callis reports that the Brewers have signed third-round pick (No. 90 overall) Barrett Astin for a bonus of $584,300 (Twitter link), which is the exact amount of the assigned slot value. The Arkansas right-hander "was a force" as a reliever in 2012 but more average as a starter in 2013, Callis adds.
• Mets tenth-round pick Luis Guillorme tweeted that he has signed with the team earlier today (hat tip: Adam Rubin of ESPN on Twitter). Callis adds that Guillorme signed for $200K, noting that the slick-fielding high school shortstop has drawn comparisons to Omar Vizquel (Twitter link). Guillorme's bonus is over slot, as the recommendation for that pick was $136,400.
• Callis also tweets that the Marlins have signed sixth-round pick Ryan Aper for $225K. A junior college player from Illinois, Aper possesses a quick bat and has a plus arm and speed in center field. Aper signed about $30K under the slot recommendation of $257,400.
• The Rockies have signed right-hander Konner Wade for a $198,500 bonus, tweetsCallis. Wade was a seventh-round pick out of Arizona and features a solid fastball/changeup combo when he's at his best, Callis notes. Wade signed for exactly slot value.
• Callis also reports that the Cardinals have signed 16th-round pick Blake Higgins for a $100K bonus (Twitter link). Higgins attended Jackson Community College in Michigan and is forgoing a Michigan State commitment to sign. He's already had Tommy John surgery but was clocked at 95 mph prior to his injury.
• One more from Callis, who adds (also via Twitter) that the Brewers have signed Fresno State left-handerTyler Linehan for $125K. Milwaukee selected the 6'4", 240-pound hurler in the ninth round, and Callis reports that he sits 88-93 mph with his fastball. Linehan came at a slight discount, asthe slot value of his pick was $144,100.

Zach Links contributed to this post.