Seattle Mariners hurler Luis Castillo has been linked to several teams in the rumor mill. Could he land with the Baltimore Orioles ahead of Opening Day?

As Evan Drellich and Ken Rosenthal of The Athletic reported in December, the A's are under pressure to spend revenue-sharing dollars, lest they face a grievance from the MLB Players Association. The target may be a $105 million luxury-tax payroll, in which case they're still about $8.2 million in average annual value away from hitting it.

And most of the trade speculation involving Seattle's has surrounded veteran starting pitcher and three-time All-Star Luis Castillo ... and catchers report to Spring Training.

This story was excerpted from Daniel Kramer's Mariners Beat newsletter. To read the full newsletter, click here. And subscribe to get it regularly in your inbox.

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