June 29, 2026, 3:54 p.m. ET
The Los Angeles Angels (36-49) and the Seattle Mariners (42-43) open a 3-game series Monday at T-Mobile Park in Seattle, Washington. First pitch is scheduled for 9:40 p.m. ET. Let’s analyze MLB odds around the Angels vs. Mariners odds and make our expert MLB picks and predictions for the best bets.
Season series: Angels lead 2-1
The Angels won 2 of 3 games in the first series in Anaheim April 3-5, with both wins coming by 1 run. The Under cashed in 2 of the 3 outings.
The Angels took 2 of 3 games from the A’s over the weekend in Anaheim, cashing the Under in the final 2 games. It won Sunday by a 4-1 score as slight underdogs (-106) as the Under (9.5) cashed. CF Josh Lowe had the big blow with a 2nd-inning grand slam in 2 at-bats.
The Mariners suffered 2 losses in 3 games in Cleveland over the weekend, and they’ve dropped the past 3 series since June 19. Seattle fell 6-5 as a slight dog (+102) on Sunday despite collecting 13 hits. 1B Josh Naylor was a bright spot with a 2 for 4 game, posting the only extra-base hit (a double) with a run scored and an RBI. CF Julio Rodriguez went 2 for 4 with a run scored, an RBI and a stolen base.
Watch MLB on Fubo!Angels at Mariners projected starters
RHP Ryan Johnson vs. RHP George Kirby
Johnson (1-2, 8.84 ERA) makes his fourth start seventh appearance). He has a 1.71 WHIP, 4.2 BB/9 and 7.0 K/9 in 19 1/3 innings.
Last start: Win, 6 IP, 0 ER, 1 H, 1 BB, 8 K in 5-1 home victory vs. Baltimore Orioles on Tuesday2026 road splits (2 starts): 0-2, 11.88 ERA (8 1/3 IP, 11 ER), 3 HR, 5 BB, 4 K, 2.40 WHIPCareer vs. Mariners (1 relief appearance): 1 IP, 1 ER, 3 H, 1 BB, 1 K, 4.00 WHIP, 9.0 K/9
Kirby (6-7, 3.94 ERA) makes his 17th start. He has a 1.34 WHIP, 2.2 BB/9 and 7.9 K/9 in 96 innings.
Last start: Win, 6 IP, 2 R (1 ER), 9 H, 2 BB, 5 K in 3-2 road win vs. Pittsburgh Pirates on TuesdayJune 2026 splits (4 starts): 1-3, 4.50 ERA (22 IP, 11 ER), 2 HR, 6 BB, 25 K, 1.77 WHIP2026 home splits (9 starts): 3-4, 4.56 ERA (53 1/3 IP, 27 ER), 7 HR, 13 BB, 48 K, 1.28 WHIPCareer vs. Angels (11 starts): 7-4, 3.41 ERA (66 IP, 25 ER), 10 HR, 10 BB, 85 K, 0.94 WHIP, 11.6 K/9Angels 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 3:45 p.m. ET.
Moneyline (ML): Angels +170 (bet $100 to win $170) | Mariners -210 (bet $210 to win $100)Run line (RL)/Against the spread (ATS): Angels +1.5 (-120) | Mariners -1.5 (+100)Over/Under (O/U): 7.5 (O: -118 | U: -102)
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Angels at Mariners picks and predictionsPrediction
Mariners 5, Angels 2
The Mariners (-210) will set you back more than 2 times your potential return, and that’s way too expensive for a standalone bet.
Instead, look to the run line, which is much more economical.
PASS.
Let’s back MARINERS -1.5 (+100) at even-money laying the run and a half. There is plenty of risk here, as the Angels have won 2 of the first 3 meetings this season. However, the Mariners are a solid play at T-Mobile Park, especially with Kirby on the hill against the team which strikes out the most in the majors.
UNDER 7.5 (-102) is worth a look in this series opener, but take it easy.
The Under is 6-2 in the past 8 games for the Mariners and 4-2 in their past 6 home outings. The Under is 5-4-2 in the past 11 starts with Kirby on the bump, too.
For the Angels, the Under cashed in the final 2 games of their series against the A’s. The Under is 9-4 in Los Angeles’ past 13 games, too, and 12-5 across the club’s previous 17 outings.
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