Athletics vs Seattle Mariners Picks and Predictions for Monday, April 20, 2026

By: Cameron Ross Published 04/20/2026, 01:20 AM ET

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Athletics vs Mariners Game Information

The Athletics will be on the road Monday night for game 1 of 3in Seattle at 9:40 PM against the Seattle Mariners. The Athletics have 11 wins and 11 losses coming into this matchup, having lost 3 of the last 4 after a 3-run home loss to the Chicago White Sox on Sunday. The Seattle Mariners stay home Monday night, 3 games above .500 on the year, riding a 2-game winning streak after a 3-run victory against the Texas Rangers. Stay in the loop with our MLB Picks.

Athletics Preview

The Athletics offense has been mediocre this season, with a .232 batting average. The Athletics have scored 87 runs on 163 hits, but have scored just 12 runs during their last 3 losses. The pitching has been horrendous, with a 4.71 team ERA, and they've given up 25 runs over their last 3 losses. Shea Langeliers leads the Athletics offense this season with a .310 batting average and 6 home runs. Tyler Soderstrom leads the team with 15 RBI's this season.

Mariners Preview

The Seattle Mariners offense has been below average this season, with a .214 team batting average. Seattle has scored just 85 runs on 153 hits, but has scored 12 total runs over their last 2 victories. Seattle pitching has been shaky, with a 3.27 team ERA, but the Mariners have given up 5 runs during their current 2-game winning streak. Luke Raley leads the Seattle offense this season with a .313 batting average, five home runs, and thirteen RBI's this season.

Athletics vs Mariners Pitching Matchup

JT Ginn will be on the mound Monday night for the Athletics, carrying a 3.31 ERA across 16.1 innings of work, along with a record of 0-0 on the year. Emerson Hancock will counter for the Seattle Mariners on Monday night. Hancock has 2 wins and 1 loss this season and a 2.28 ERA across 23.2 innings of work.

Athletics vs Mariners Pick

Both teams are hovering around .500 coming into this matchup, but Seattle is the better team despite their record. Seattle will continue to work through their offensive struggles, but it has the better pitcher on the mound. Look for the Seattle Mariners to do the job against a below-average Athletics team on Monday, resulting in the victory.

Pick: Seattle Mariners -163
Secondary: Over 8
Lean: Luke Raley Over 1.5 Bases

Final Score Prediction: Seattle Mariners win 7-4.

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