MLB Betting Trends Seattle Mariners vs Tampa Bay Rays

• Total: o7.5 +115 Mariners vs Rays u7.5 -105
• Money Line: -110 Mariners vs Rays -106
• Watch: MLBtv / George M. Steinbrenner Field, Tampa, FL, Sep 1, 2025 7:35 PM EDT
• Pitching: Castillo, L.M. vs Baz

The Mariners and Rays square off Monday night in Tampa in a matchup with plenty of betting angles. Seattle has owned this head-to-head, going 6-1 straight up in its last 7 games against Tampa Bay, and oddsmakers have this one close to a pick’em at Mariners -110 / Rays -106.

On totals, Tampa trends toward offense at home—the OVER has cashed in 4 of their last 5 games at Tropicana—and the line is set at 7.5 runs (O +115 / U -105). Seattle sends Luis Castillo, while Tampa counters with Shane Baz, giving this matchup a strong pitching narrative.

With the public eyeing Seattle’s dominance, sharp bettors may look to exploit value on the total instead.

Betting Trends
Seattle has won 6 of its last 7 matchups against Tampa Bay.			The OVER has hit in 4 of Tampa Bay’s last 5 home games.

September baseball starts now. #TridentsUp pic.twitter.com/s4dmEubfdV

— Seattle Mariners (@Mariners) September 1, 2025

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