The Colorado Rockies (43-115) visit the Seattle Mariners (89-69) Thursday for the finale of a 3-game series. First pitch from T-Mobile Park is set for 9:40 p.m. ET. Let’s analyze BetMGM Sportsbook’s MLB odds around the Rockies vs. Mariners odds and make our expert MLB picks and predictions for the best bets.
Season series: Mariners lead 2-0
The Rockies, the worst team in the majors, look to avoid a sweep after dropping the first 2 games of the series. They have lost 8 of their last 10 games. They fell 9-2 Wednesday, getting 2-hit by Seattle SP Luis Castillo and 2 relievers. DH Blaine Crim hit a solo home run, his fifth of the season. SP Tanner Gordon allowed 5 runs in the first 2 innings and lasted 3 1/3 innings, giving up 7 runs (5 earned) on 8 hits, including 3 home runs, while striking out 3.
The Mariners have clinched the AL West but are 1 game behind the Toronto Blue Jays and New York Yankees, who are tied for the top seed in the AL. They have won 6 straight games and are 16-1 in their last 17. On Wednesday, Castillo struck out 10 and allowed 1 run on 1 hit over 7 1/3 innings. C Cal Raleigh reached 60 home runs on the season with 2 in the game, driving in 4 runs on 3 hits, and OF Randy Arozarena hit his 31st home run of the season.
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Rockies at Mariners projected starters
RHP Bradley Blalock vs. TBD
Blalock (2-5, 9.16 ERA) makes his 12th start and 14th appearance. The rookie has a 1.82 WHIP, 3.4 BB/9 and 4.3 K/9 through 55 innings.
Last start: Win, 5 IP, 6 ER, 8 H, 1 BB, 4 K in 7-6 home victory over Los Angeles Angels FridayHas allowed 5-plus ER in 5 consecutive starts2025 road splits: 0-1, 5.61 ERA (25 2/3 IP, 16 ER), 1.40 WHIP, 6.0 K/9 in 5 starts, 1 relief appearanceHas never faced Mariners
The Mariners have yet to announce a starter.
Their starters have a 55-43 record with a 3.97 ERA (No. 14 in MLB) and 1.19 WHIPRelievers are 34-26 with 3.71 ERA, 1.28 WHIP and 48 savesRockies at Mariners odds
Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 12:01 p.m. ET.
Moneyline (ML): Rockies +170 (bet $100 to win $170) | Mariners -210 (bet $210 to win $100)Run line (RL)/Against the spread (ATS): Rockies +1.5 (-115) | Mariners -1.5 (-105)Over/Under (O/U): 8 (O: -110 | U: -110)
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Rockies at Mariners picks and predictionsPrediction
Mariners 7, Rockies 3
Is it ever a good idea to bet the Rockies to win on the road? At 18-59, they are the worst road team in baseball, and they are starting a pitcher who has allowed 5 or more runs in 5 straight starts. They have scored more than 4 runs on the road only once in their last 11 games.
The Mariners are 50-27 at home and the hottest team in baseball, and they have a shot at the top seed in the AL playoffs.
Don’t bet the Rockies, but at -210 odds, the Mariners aren’t good value.
PASS.
Fifteen of the Rockies’ last 17 losses have been by at least 2 runs.
Eight of the Mariners’ last 9 wins have been by 2 or more runs.
BET MARINERS -1.5 (-105).
Blalock’s last 7 starts — and 10 of his 11 — have had more than 8 total runs.
Eleven of Seattle’s last 17 games have had at least 8 total runs.
BET OVER 8 (-110).
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