Washington Nationals at Seattle Mariners odds, picks and predictions
Washington Nationals at Seattle Mariners odds, picks and predictions
The Washington Nationals (24-30) and the Seattle Mariners (30-23) play the second game of a 3-game set Wednesday. First pitch from T-Mobile Park is scheduled for 9:40 p.m. ET. Let's analyze BetMGM Sportsbook's MLB odds around the Nationals vs. Mariners odds and make our expert MLB picks and predictions for the best bets.
Season series: Mariners lead 1-0
The Mariners, who were -159 home favorites, routed the Nationals 9-1 in the Tuesday opener with the Over (8.5) cashing. CF Julio Rodríguez and C Cal Raleigh homered in the first inning, with Raleigh adding a second blast in the fifth. The win followed a 6-4 road trip -- through San Diego, Chicago (White Sox) and Houston -- which concluded with back-to-back losses vs. the Astros.
Nationals LF James Wood provided Washington's only offense with a homer in the fourth inning. The Nationals have dropped back-to-back games and 3 of their last 4 following a 5-game win streak from May 16-22.
Nationals at Mariners projected starters
RHP Trevor Williams vs. RHP George Kirby
Williams (2-5, 6.39 ERA) makes his 11th start. He has a 1.56 WHIP, 2.7 BB/9 and 7.5 K/9 through 49 1/3 innings.
Last start: No-decision, 3 2/3 IP, 5 ER, 4 H, 3 BB, 3 K in 8-7 home victory in 10 innings vs. Atlanta Braves Thursday
2025 road stats: 1-3, 6.29 ERA (24 1/3 IP, 17 ER), 1.68 WHIP, 35 H, 6 BB, 18 K in 5 starts
2024 vs. Mariners: 1 home start (May 25), no-decision, 5 IP, 1 ER, 5 H, 0 BB, 8 K in 3-1 victory
Career vs. Mariners: 0-0, 4.00 ERA (9 IP, 4 ER), 1.56 WHIP, 13 H, 1 BB, 12 K in 2 starts
Kirby (0-1, 12.27 ERA) makes his second start. He allowed 5 earned runs on 6 hits and 1 walk with 4 K's in 3 2/3 innings in his season debut, a 9-2 loss at the Houston Astros Thursday.
Missed start of season with inflammation in throwing shoulder
2024 stats: 14-11, 3.53 ERA (191 IP, 75 ER), 1.07 WHIP, MLB-best 1.1 BB/9, 8.4 K/9 in 33 starts
2024 home stats: 6-5, 3.06 ERA (82 1/3 IP, 28 ER), 1.01 WHIP, 9.2 K/9 in 14 starts
Career vs. Nationals: 0-1, 4.15 ERA (13 IP, 6 ER), 1.23 WHIP, 15 H, 1 BB, 12 K in 2 starts
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Nationals 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 2:40 p.m. ET.
Moneyline (ML) : Nationals +170 (bet $100 to win $170) | Mariners -210 (bet $210 to win $100)
: Nationals +170 (bet $100 to win $170) | Mariners -210 (bet $210 to win $100) Run line (RL)/Against the spread (ATS) : Nationals +1.5 (-115) | Mariners -1.5 (-105)
: Nationals +1.5 (-115) | Mariners -1.5 (-105) Over/Under (O/U): 8 (O: -110 | U: -110)
Nationals at Mariners picks and predictions
Prediction
Mariners 5, Nationals 4
The Mariners (-210) are 14-11 at home this season and will likely win Wednesday, but risking $210 to win $100 on Seattle is too high of a price.
PASS on the ML.
Seven of Washington's last 9 games have either been Nationals wins or 1-run losses. Washington is also 27-18 on the run line as an underdog this season, according to TeamRankings.com.
While Kirby is likely to bounce back from last Thursday's rough outing in Houston, there's no guarantee he'll return to his 2024 form in just his second start this season.
BET NATIONALS +1.5 (-115).
Williams has allowed 4 or more earned runs in 4 of his last 5 starts, while Kirby surrendered 5 in his season debut. The Over is 14-9-2 (60.9%) in Seattle home games this season -- a notable shift from last year, when the Under hit at a 58.7% clip (44-31-6) at T-Mobile Park.
BET OVER 8 (-110).
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