Right-hander Danny Farquhar was optioned to Triple-A Tacoma after taking the loss Saturday, when he gave up three runs (one earned) on a double and three walks, including one intentional pass, without recording an out in the top of the 10th.
The Mariners will add two Tacoma pitchers -- lefty Roenis Elias and right-hander Logan Kensing -- in time for Sunday's series finale against the White Sox. Elias will pitch initially out of the bullpen. Kensing will take the 40-man roster spot vacated by Rodney's departure, while Elias was already on the 40-man roster.
Rodney led the Majors with 48 saves in 51 chances last year, setting a club record and earning his second All-Star appearance.