Mariners vs. Rays Dunkel MLB Picks, Predictions and Prop Bets - Aug. 9

The Tampa Bay Rays take a five-game winning streak into a home matchup versus the Seattle Mariners, at 4:10 p.m. ET on Sunday. Emerson Hancock (6-6, 3.33 ERA) will start for the Mariners, who are 56-62 this season and third in the AL West. Ian Seymour (8-3, 4.27 ERA) is starting for the Rays, who are 70-46 and first in the AL East.

With the Rays (+122) visiting, the Mariners (-137) are a solid favorite on the moneyline. The game has an over/under set at 7 runs.

Mariners vs. Rays Odds, Game Time

• Game day: Sunday, August 9, 2026
• Game time: 4:10 p.m. ET
• Location: Seattle, Washington
• Stadium: T-Mobile Park
• Favorite: Mariners (-137)
• Underdog: Rays (+122)
• Over/under: 7

How to Watch Mariners vs. Rays

• TV Channel: SEAM and RAYS
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Mariners vs. Rays: Betting the Moneyline

• The Mariners have compiled a 50-49 record in games they were listed as the moneyline favorite (winning 50.5% of those games).
• Tampa Bay has been pegged as an underdog in 39 games this year and has walked away with the win 18 times (46.2%) in those games.
• Seattle has entered 53 games this season favored by -137 or more and is 33-20 in those contests.
• This season, the Rays have come away with a win six times in nine chances when named as an underdog of at least +122 or worse on the moneyline.
• The Mariners have a 57.8% chance to win this contest based on the moneyline's implied probability.
• The Rays have an implied victory probability of 45% according to the moneyline set by sportsbooks for this matchup.

Mariners vs. Rays: Betting the Spread & Total

• The Mariners have had an over/under set by oddsmakers 118 times, and have combined with opponents to go over the total in 57 of those games (57-53-8).
• So far this season, Tampa Bay and its opponents have hit the over in 50 of its 116 games with a total.
• The Mariners have covered only 36.4% of their games this season, going 43-75-0 against the spread.
• In 116 games with a line this season, the Rays have a mark of 66-50-0 against the spread.