The Mariners announced the additional security screenings on Tuesday. They comply with a mandate from Major League Baseball that all teams have a screening program in place by the start of the 2015 season.
The Mariners will have fans use walk-through magnetometers when their tickets are scanned at all public entrances. Fans who do not want to use the walk-through metal detectors will have the option of being checked with a hand-held device.
The team said bags and backpacks that fit within size requirements will still be allowed into the ballpark but will continue to be searched before fans enter.
Source: Associated Press