The Seattle Mariners (25-19) and the San Diego Padres (27-17) wrap up a 3-game interleague series Sunday at Petco Park in San Diego. First pitch is scheduled for 4:10 p.m. ET. Let’s analyze BetMGM Sportsbook’s MLB odds around the Mariners vs. Padres odds and make our expert MLB picks and predictions for the best bets.

Season series: Mariners lead 2-0

The Mariners picked up a 4-1 win Saturday as moderate underdogs (+165) as the Under (8) cashed. The game was tied 1-1 through 6 innings, as Padres RHP Nick Pivetta did his part with just 1 ER, 2 H, 1 BB and 7 K across 6 IP in a no-decision. The bullpen coughed up 3 runs in 3 IP, however, as the M’s picked up the 3-run victory.

Padres 1B Gavin Sheets swatted a solo HR to account for the home side’s only offensive production. SS Xander Bogaerts was able to collect 3 singles in 4 at-bats, while also stealing a pair of bases. Mariners 1B Rowdy Tellez hit his eighth homer, while C Cal Raleigh belted his 15th homer, finishing 1-for-2 with 2 walks and 2 runs scored.

Seattle has won 3 in a row in this series, while going 7-1 in the past 8 meetings since Aug. 8, 2023. The Under is 3-1-1 in the past 5 meetings, while going 5-2-1 in that 8-game span since August 2023.

The Padres are 2-4 in the past 6 games, while the Under has cashed in 3 in a row. San Diego is just 4-6 in the past 10 games at home, too.

Mariners at Padres projected starters

RHP Bryan Woo vs. RHP Michael King

Woo (4-1, 2.84 ERA) makes his ninth start. He has a 0.89 WHIP, 1.4 BB/9 and 8.9 K/9 in 50 2/3 innings.

Last start: No decision, 6 1/3 IP, 0 ER, 4 H, 0 BB, 6 K in 2-1 home win in 11 innings vs. New York Yankees Tuesday2025 road splits: 2-1, 4.02 ERA (31 1/3 IP, 14 ER), 3 HR, 5 BB, 32 K, 0.93 WHIP in 5 starts2024/career vs. Padres (1 start): Win, 6 2/3 IP, 2 ER, 2 H (1 HR), 1 BB, 5 K in 5-2 home win Sept. 11

King (4-1, 2.32 ERA) makes his 10th start. He has a 0.99 WHIP, 2.9 BB/9, 10.0 K/9 in 50 1/3 innings.

Last start: No decision, 5 2/3 IP, 3 R (2 ER), 4 H (1 HR), 2 BB, 8 K in 9-5 home loss vs. Los Angeles Angels Monday2025 home splits: 3-1, 1.64 ERA (33 IP, 6 ER), 2 HR, 10 BB, 45 K, 0.88 WHIP in 6 starts (1 CG)2024 vs. Mariners: 0-2, 1.64 ERA (11 IP, 2 ER), 0 HR, 3 BB, 15 K in 2 startsCareer vs. Mariners: 0-2, 1.98 ERA (13 2/3 IP, 3 ER), 5 BB, 19 K, 1.10 WHIP, 12.5 K/9 in 2 starts and 2 relief appearances

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Mariners at Padres odds

Provided by BetMGM Sportsbook; access USA TODAY Sports Scores and Sports Betting Odds hub for a full list. Lines last updated at 6:54 a.m. ET.

Moneyline (ML): Mariners +120 (bet $100 to win $120) | Padres -145 (bet $145 to win $100)Run line (RL)/Against the spread (ATS): Mariners +1.5 (-200) | Padres -1.5 (+165)Over/Under (O/U): 7 (O: -125 | U: +105)Mariners at Padres picks and predictionsPrediction

Padres 3, Mariners 2

The PADRES (-145) are worth a look as moderate favorites behind King in this solid pitching matchup. San Diego has dropped the first 2 games of this interleague series, so it looks to salvage the finale Sunday.

There is plenty of risk, as the Padres are just 1-4 across the past 5 starts for King, while the Mariners have won each of Woo’s past 4 starts, while going 6-2 in his 8 outings this season.

The Mariners +1.5 (-200) will cost you 2 times your potential return, and that’s a little too much risk for not much reward if you need some insurance.

If you like Seattle, just bet it straight up. The M’s have won the first 2 in this series, and the Padres have struggled to get the job done with King on the bump.

PASS.

UNDER 7 (+105) is worth a look at plus-money.

The Under has a 3-2 edge in the past 5 starts for Woo, while cashing in each of the previous 4 outings for the Mariners.

For the Padres, the Under has cashed in each of the previous 3 outings, too. In that span, San Diego is averaging 2.3 runs per game, while allowing 3.4 RPG.

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