Mariners vs. Phillies Prediction Tonight: Best Bets & Odds Expect Suarez to Struggle
Seattle hits its third city in three days, and my Mariners vs. Phillies prediction expects the visitors to grab a victory against the National League East leaders.
First pitch from Citizens Bank Park in Philadelphia is scheduled for 6:45 p.m. ET (MLB Network). The best sports betting sites believe Seattle will overcome its scheduling quirk and list the visitors as -108 betting favorites in the interleague bout.
My Mariners vs. Phillies best bets believe in the American League contenders against Philadelphia's struggling starter, Ranger Suarez.
⚾ Mariners vs. Phillies prediction & odds
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🧐 Mariners vs. Phillies betting insights
The latest Mariners vs. Phillies betting insights are from BetMGM as of Monday evening.
| Team | Run Line | Moneyline | Total |
| Mariners | 17% (-1.5, +155) | 36% (-105) | 76% (Over 7.5, -115) |
| Phillies | 83% (+1.5, -190) | 64% (-115) | 24% (Under 7.5, -105) |
💰 Mariners vs. Phillies prediction & best bet
✅ Mariners vs. Phillies prediction: Mariners to win (-108 via FanDuel)
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If Philadelphia had anyone but Suarez toeing the rubber, I would have said Seattle’s constant travel and all of the distractions it had with the Little League Classic would be too much to overcome. But Suarez’s struggles and Seattle’s success against southpaws have me backing the visitors in my Mariners vs. Phillies prediction.
Seattle is 20-12 against left-handed starting pitchers, and is one of three MLB teams eight games above .500 or better in that split. Meanwhile, Suarez has allowed 24 runs over his last six starts. He is 1-4 with a 6.11 ERA over that span, after allowing just 18 runs in his previous 12 starts.
Suarez’s history of second-half struggles is the biggest reason for my Mariners vs. Phillies best bet. Over the last two seasons, the lefty has pitched to a 2.50 ERA in 32 starts compared to a 6.06 ERA in 13 combined starts after the All-Star break. Perhaps Suarez is ailing, as his fastball the first time through the order in his last start was two mph slower than his season average.
Using a FanDuel promo code you can get this game as a virtual pick ’em with each team at -108 odds, as all other competing best sportsbooks have Seattle as slight -115 moneyline favorites.
💰 Best Mariners vs. Phillies player prop
✅ Best Mariners vs. Phillies player prop: Julio Rodriguez Over 0.5 RBIs (+180 via DraftKings)
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Rodriguez has 22 RBIs against left-handed pitchers, which ranks second on the team behind Cal Raleigh. His numbers against southpaws have improved mightily over the last 30 days, which is why I am backing him to drive in a run as my best Mariners vs. Phillies player prop.
Rodriguez is batting .252 with a .519 slugging percentage against left-handed pitchers this season. But over the last 30 days, he has improved those numbers to .273 and .636, respectively.
Rodriguez leads the team with a 158 wRC+ against southpaws over the last month, and should again have plenty of RBI chances hitting behind Raleigh and Randy Arozarena.
These are great odds for a hitter who has four RBIs over his previous four games. A $10 winning wager would earn maximum value by using a DraftKings promo code (net $18 in profits), compared to the $16.50 one would stand to earn based on the +165 odds at the low end of the market.
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