Source: D-backs' Saunders on waivers

The Arizona Diamondbacks traded shortstop Stephen Drew on Monday night, saving at least $3.3 million without compromising the team's chances of staying in contention. Could the D-backs be plotting a similar move with left-hander Joe Saunders? The D-backs placed Saunders on trade waivers Tuesday, according to major-league sources. And just as the team had a ready replacement for Drew, with shortstop Willie Bloomquist nearly set to return from the disabled list, it has a potential replacement for Saunders. That replacement would be Triple A left-hander Tyler Skaggs, who will make his major-league debut for the D-backs on Wednesday in the second game of a double-header against Miami. Skaggs, 21, is 4-2 with a 2.91 ERA in nine starts at Triple A, but his ERA was a mere 1.70 before he struggled in his most recent outing, allowing eight runs in five innings. If the D-backs traded Saunders, they simply could keep Skaggs into their rotation, which also includes right-handers Trevor Cah...