Seattle Mariners vs Baltimore Orioles – MLB Prediction – June 17, 2026

Seattle Mariners vs Baltimore Orioles: Seattle aim to keep ruling the roost at home

T-Mobile Park is set for another meeting between the Mariners and the Orioles, two teams arriving in very different shape. Seattle have been hot and cold, but they are still a tough out in front of their own fans. Baltimore, by contrast, are still searching for answers and head to Washington with far less momentum.

The first meeting between the sides went Seattle’s way as they won 3-1. That trend could carry on given the Orioles’ current struggles on the road.

Seattle lean on their home form

The Mariners have not quite found their best level in recent weeks, with five wins and five defeats across their last 10 games. But it is a different story at home. Seattle have been especially strong in front of their own crowd and have won seven of their last eight games at T-Mobile Park.

The offence is usually good enough to make the difference, while the group often finds another gear when it matters most. Even if things are not perfect on the mound, the Mariners have made a habit of showing up at home. This series against Baltimore backs that up. Seattle lead the season series 3-2 and also won the latest meeting.

The Orioles are going through a rough patch

Baltimore are in a tougher spot. The Orioles have won only three of their last 10 games and are on the back of a string of defeats. Worse still, the problems keep cropping up on the road. Offensively, they can still spark into life, but the lack of consistency is hurting them. The bullpen has also shown its limits lately, coughing up several games in the late innings.

The 3-1 defeat in their previous game against Seattle summed it up. Baltimore never really found any rhythm and once again fell short in the key moments.

MLB Prediction: Seattle Mariners vs Baltimore Orioles

Seattle Mariners to win

The Mariners are not exactly flying, but they do offer more reliable signs in this one. Their home record remains strong and their recent results at T-Mobile Park are firmly in their favour.

Baltimore, on the other hand, are short on confidence and look even more fragile once they leave home. In these conditions, Seattle look well placed to back up their recent edge in this series and get another win in front of their own fans.

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