Colorado Rockies at Seattle Mariners

The Seattle Mariners host the Colorado Rockies for an interleague matchup at T-Mobile Park. This Sunday game features two teams from different leagues, which always adds a bit of novelty to the regular season schedule as they don't play each other often. It's a chance to see how the Mariners stack up against National League competition. This Colorado Rockies at Seattle Mariners game is on Sunday, April 11, 2027, at T-Mobile Park in Seattle. First pitch is technically listed at 11:59 PM, but that's likely a placeholder for a daytime game. Expect a family-friendly atmosphere at the ballpark, with plenty of food and drink options available for a casual afternoon out.