Four of the Mariners' top prospects -- shortstop Drew Jackson and outfielders Tyler O'Neill, Braden Bishop and Boog Powell -- are also scheduled to take part in the festivities.
FanFest tickets are $10 for adults, with kids 14 and under admitted free. Tickets are available in advance at mariners.com/FanFest and at team stores, as well as the day of the event at the ticket windows. Parking at the Safeco Field garage is $5 in advance or $10 on the day of the event.
FanFest runs from 11 a.m. to 4 p.m. PT both days, while there is also a season ticket holder session from 9-11 a.m. on Saturday, Jan. 30.
The players in attendance will sign autographs and participate in various activities around the ballpark, including dugout dialogue Q&A sessions with fans.
Other attractions include clubhouse tours, a Ken Griffey Jr. National Baseball Hall of Fame exhibit and Nelson Cruz's Silver Slugger display. Fans can also run the bases, throw a pitch in the bullpen and take a photo at home plate, as well as play carnival games in the Kids Fun Zone.