Dilip Vishwanat/MLB Photos via Getty Images
Seattle Mariners pitcher Luis Castillo is a hot commodity on the offseason trade market.
Ken Rosenthal of The Athletic reported that the right-handed starting pitcher has been checked in on by the Chicago Cubs, Boston Red Sox, Baltimore Orioles and New York Mets.
"His durability and 3.56 career ERA are two reasons the Chicago Cubs, Boston Red Sox, Baltimore Orioles and New York Mets are among the teams to at least inquire on him, according to league sources and reports," Rosenthal wrote.
This article will be updated soon to provide more information and analysis.