Draft Signings: Mathisen, Maxwell, Cardinals

Here are Saturday's notable non-first round draft pick signings…

• The Pirates have agreed to sign second rounder Wyatt Mathisen according to Rob Biertempfel of The Pittsburgh Tribune-Review (on Sulia). Tim Williams of Pirates Prospects first reported the agreement. The high school catcher from Texas was the 69th overall pick, which carries a slot value of $746K.
• The Athletics have signed second rounder Bruce Maxwell for a below slot $770K, reports Jim Callis of Baseball America (on Twitter). The college bat was slotted for $831K.  Maxwell is represented by Matt Sosnick and Adam Karon of Sosnick Cobbe Sports.
• In addition to first rounder Stryker Trahan, the Diamondbacks announced that they've agreed to terms with 30 other draft picks. Second rounder Jose Munoz and third rounder Jake Barrett highlight the crop. The Arizona Republic has the full list.
• Ben Nicholson-Smith reports (on Twitter) that the D'Backs gave ninth rounder Jeff Gibbs a $90K bonus plus college tuition. Callis reports (on Twitter) that they gave fourth rounder Charles Taylor a $250K bonus. Slot money for those two picks is $125K and $286K, respectively.
• The Cardinals have signed third rounder Tim Cooney for a straight slot $404K bonus, reports Callis (on Twitter). The left-hander hails from Wake Forest.
• The Mariners have agreed to terms with fourth rounder Patrick Kivlehan, reports MLB.com's Josh Liebeskind. Slot money for the Rutgers third baseman is $353K. Seattle also signed 12th rounder Mike Faulkner for $100K according to Callis (on Twitter).
• The Red Sox have signed their fifth through tenth round draft picks according to WEEI.com's Alex Speier. All six players are college seniors.
• The Royals have signed sixth rounder Zach Lovvorn for $275K, reports Callis (on Twitter). Slot money for the pick was $194K.
• The Astros announced the signing of eight more picks, including ninth rounder Daniel Minor. Houston has now signed 18 picks total according to the release.
• The Phillies have signed tenth rounder Kevin Brady for a straight slot $125K bonus according to Callis (on Twitter). The right-hander is out of Clemson.