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7/8/2014 4:55 P.M. ET

"Mystery" Autograph Grab Bags Available Friday, July 11

Sales of Autographed Baseballs in Paper Bags Support Mariners Care Nonprofit Foundation

The annual Mystery Autograph Grab Bag sale, organized by the Seattle Mariners Wives, is Friday, July 11, when the Mariners take on the Oakland A's. Game time is 7:10pm.

Fans can buy a grab bag for $50. Inside the sealed paper bag will be one baseball, autographed by a Mariners player or manager Lloyd McClendon.

Proceeds from the sales will benefit Mariners Care, the team's nonprofit foundation which supports primarily youth-oriented charities throughout the Pacific Northwest. Mariners Care, in partnership with the team's corporate partners, has provided an average of $1 million a year for regional charitable programs and causes. Since 2000, the contributions have totaled $14.8 million.

The grab bags will be available on the Main Concourse near Section 128, at the skybrige entrance to the Terrace Club, on the Holland America Suite Deck and the KeyBank Diamond Club.

Tickets for the Mariners homestand and all remaining games at Safeco Field are available without a service charge at the Safeco Field ticket office and Seattle Mariners Team Stores (downtown Seattle at 4th & Stewart, Bellevue Square, Southcenter and Alderwood Mall). Tickets are also available online at mariners.com and by phone at 1-888-SEA-HITS.

This story was not subject to the approval of Major League Baseball or its clubs.