(Seattle, WA)  --  The Mariners optioned right-handed pitcher Chasen Bradford and outfielder Ben Gamel to Triple-A Tacoma.  Seattle needed to make roster space for the additions of outfielder Cameron Maybin and reliever Adam Warren.  Third baseman Kyle Seager is expected to join the club today after a paternity leave.  First baseman Ryon Healy was scratched with lower back tightness from the lineup in the 8-3 loss to the Astros.