The St. Louis Cardinals (8-11) and Seattle Mariners (8-11) meet Friday for the opening game of a 3-game series. First pitch from T-Mobile Park is set for 10:10 p.m. ET. Let’s analyze BetMGM Sportsbook’s lines around the Cardinals vs. Mariners odds and make our expert MLB picks and predictions for the best bets.
Season series: First meeting since 2019 season when Cardinals won 2 of 3 games; St. Louis leads all-time series 11-7
St. Louis won 14-5 as -201 home favorites Wednesday vs. the Arizona Diamondbacks after dropping the 1st 2 games of the series. The Cardinals only went 3-4 during their 7-game homestand, but are a hot-hitting team. St. Louis ranks 4th in batting average (.274) and 3rd in hits (181).
Seattle is 3-3 on their current 9-game homestand. They lost 5-3 as -131 home favorites vs. the Milwaukee Brewers Wednesday. After sweeping Colorado at home they were swept by the Brewers.
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Cardinals at Mariners projected starters
LHP Steven Matz vs. RHP George Kirby
Matz (0-2, 6.48 ERA) makes his 4th start. He has a 1.80 WHIP, 4.3 BB/9 and 9.2 K/9 in 16 2/3 IP.
- Last start vs. Seattle was Aug. 15, 2021, as a member of the Toronto Blue Jays; 5 IP, 3 H, 0 ER, 3 BB, 4 K and a win
- In 9 road appearances (6 starts) last season: 26 IP, 23 H, 13 ER, 7 BB, 30 K
Kirby (1-1, 3.78 ERA) makes his 4th start. He has a 1.26 WHIP, 0.5 BB/9 and 6.5 K/9 in 16 2/3 IP.
- First time pitching against St. Louis
- Was 3-3 in 13 home starts last season; 71 1/3 IP, 77 H, 26 ER, 10 BB, 77 K
Cardinals 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 10:38 a.m. ET.
- Moneyline (ML): Cardinals +110 (bet $100 to win $110) | Mariners -135 (bet $135 to win $100)
- Run line (RL)/Against the spread (ATS): Cardinals +1.5 (-185) | Mariners -1.5 (+150)
- Over/Under (O/U): 8 (O: -110 | U: -110)
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Cardinals at Mariners picks and predictions
Prediction
Mariners 4, Cardinals 2
Moneyline
LEAN MARINERS (-135).
The Mariners are only 5-8 at home this season which is why I am more confident in the O/U bet than this one. The Cardinals are a very solid team and have the potential to put up 8+ runs any given night. The Mariners are still the safer lean here because the Cardinals inconsistency on pitching and on defense is what is hurting them.
Run line/Against the spread
AVOID.
The risk at Cardinals +1.5 (-185) is not worth the potential payout here. The Cardinals are a decent road team (3-3), but don’t often play in close games. They are 1-2 in 1-run games this year and while they very well could make this a close game, or even win, this bet is not a safe one.
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Over/Under
BET UNDER 8 (-110).
For St. Louis the Under is 3-0-1 in Matz’s last 4 starts on grass and for Seattle the Under is 4-0 in their last 4 interleague home games vs. a left-handed starter.
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