The Seattle Mariners missed the postseason after a strong start to the year. They could look to trade one of their talented pitchers to add some offensive help.

The offseason is a time for speculation, rumors and 'what-ifs.' And one Seattle Mariners starting pitcher has been featured a lot in the 'what-if' category late

Is the blockbuster trade lurking right around the corner for the Boston Red Sox? Two things are clear about the Red Sox: they're close to being playoff-ready, but they don't have the starting pitching to get there.

The Boston Red Sox are looking for some frontline pitching to upgrade their starting rotation, and this proposed trade can do that and then some. Per Play Tessie, a proposed trade between the Sox and Seattle Mariners would land All-Star ace Luis Castillo in Boston for Wilyer Abreu and Masataka Yoshida.