Mariners sent OF Leonys Martin outright to Triple-A Tacoma.
Martin was designated for assignment by Seattle earlier this week after batting .111/.172/.130 over his first 58 plate appearances. The 29-year-old outfielder passed through waivers unclaimed primarily because he's making a $4.85 million salary in 2017.
White Sox prospect Zach Burdi pitched two scoreless innings in relief for Triple-A Charlotte on Wednesday.
In just under eight innings, Burdi has struck out 13 hitters, and opposing batters are hitting just .219 against him. With a triple-digit fastball, nasty slider and impressive change, he has the stuff to be a dominant closer at the next level. Don't be surprised if he's closing out games for the White Sox before the end of the 2017 season.
Reds prospect Nick Senzel went 3-for-6 for High-A Daytona on Wednesday.
Senzel also scored two runs and stole a base. It's been a bit of an up-and-down start to the 2017 season for last year's second-overall selection, but there's been more good than bad. This is one of the best infield prospects in baseball, and his advanced offense and defense should see him move quickly through the Cincinnati system.
Denard Span has been sent for more tests on his sprained right shoulder.
And manager Bruce Bochy acknowledged Thursday that Span is going to need more than 10 days on the disabled list. Gorkys Hernandez and Drew Stubbs are splitting time in center field for San Francisco.
Pirates pitching prospect Taylor Hearn gave up one run over six innings of work for High-A Bradenton on Wednesday.
Hearn didn't walk anyone in the outing, and he allowed just four hits. Acquired in the Mark Melancon deal, Hearn has electric stuff, starting with a fastball that can get up to 99 mph. He also has a solid slider, and his change has made a bit of progress. He's likely headed for the bullpen, but you can't blame Pittsburgh for giving him a chance to pitch in the rotation. If he can, his value increases substantially.