Any starting pitcher capable of getting major league hitters out is likely to attract interest on the trade market from playoff contenders at this time of year.
Even among those in the postseason chase, few teams have enough starting pitching. The D-Backs are obviously one of them, as they're letting Saunders go to add rookie Tyler Skaggs to their rotation. But others need an arm like Saunders to provide a solid third or fourth starter. Saunders would also provide depth to any staff that has some questions about the endurance of its younger arms.
As Rosenthal wrote, Saunders will be on waivers until 1 p.m. ET Thursday (Aug. 23). Will a playoff contender claim him or will he clear waivers, allowing the D-Backs to trade him anywhere? Regardless of what happens, expect these six teams to be in the mix for Saunders.