SEATTLE, WASHINGTON - JUNE 20: Shed Long Jr. #4 of the Seattle Mariners hits a game winning grand slam against the Tampa Bay Rays at T-Mobile Park on June 20, 2021 in Seattle, Washington. The Seattle Mariners beat the Tampa Bay Rays 6-2 in extra innings. Photo: Getty Images North AmericaShed Long, Jr. with a walk-off grand slam in the 10th inning yesterday. Mariners get a 6-2 win over the Rays in Seattle, sweeping Tampa Bay. Check out the party at the plate below.