Filed under: Sporcle Friday: Mariners with the Most Grand Slams Four runs, one swing. By Luke Mounger@LukeMounger Oct 27, 2017, 8:00am PDT Share this story Share this on Facebook Share this on Twitter Share All sharing options Share All sharing options for: Sporcle Friday: Mariners with the Most Grand Slams Reddit Pocket Flipboard Email Photo by Victor Decolongon/Getty Images I was playing with my franchise in MLB The Show last night, and Bryce Harper The Mariner hit a grand slam off the Hit It Here Cafe. This got me thinking, which Mariners have hit the most grand slams? Let’s find out in the form of a quiz. LINK! More From Lookout Landing Pairing Mariners Photos of the Week with Song Titles Most annoying game of the year ends in 5-3 loss to Rangers 62-54: Chart 8/14/22: Game Thread, Part Three 8/14/22: Game Thread, Part Two 8/14/2022: Open Game Thread