Seattle Mariners vs Washington Nationals Picks and Prediction for Saturday June 13 2026
The Seattle Mariners travel to face the Washington Nationals on Saturday, June 13, 2026, at Nationals Park in Washington, District of Columbia. First pitch is scheduled for 4:05 PM ET with coverage available on MLB.TV. At the time of this writing the odds were not released. Be sure to check out our free MLB picks.
Starting Pitchers
Seattle is expected to start Luis Castillo, while Washington will send Cade Cavalli to the mound. Castillo enters the game with a 2-5 record, a 5.16 ERA, and a 1.36 WHIP across 61.0 innings. He has allowed 60 hits while recording 61 strikeouts, 23 walks, and eight home runs. Cavalli comes into this matchup with a 3-4 record, a 3.88 ERA, and a 1.44 WHIP over 69.2 innings. He has allowed 75 hits while striking out 76 batters, walking 25, and surrendering five home runs.
Seattle Looks to Rebound on the Road
The Mariners enter this contest with a 36-34 overall record and a 17-18 mark away from home. Seattle has gone 2-3 over its last five games. The Mariners recently won over Baltimore in extra innings and also picked up another victory against the Orioles, but they recently lost to Baltimore twice and also suffered a one-run loss against Detroit. Their most recent game was a 7-5 defeat in Baltimore.
Seattle is batting .237 as a team with 297 runs, 554 hits, and 90 home runs. The Mariners own a .318 on-base percentage and a .397 slugging percentage. On the mound, they have compiled a 3.59 ERA and a 1.20 WHIP while holding opponents to a .241 batting average. Seattle has also drawn 185 walks and recorded 602 strikeouts.
Sign Up Get $30 Premium Picks Credit + Exclusive Offers
Subscribe Now
The biggest strength for Seattle is its pitching staff. The Mariners own the better ERA and WHIP in this matchup, and they have done a solid job limiting opposing offenses throughout the season. Their 90 home runs also demonstrate an ability to score quickly despite a modest batting average.
Washington Tries to Capitalize at Home
The Nationals come into this game with a 35-34 overall record and a 12-20 record at home. Washington has won three of its last five games, recently winning over San Francisco and Arizona during that stretch. The Nationals most recently lost a high-scoring 11-10 game against San Francisco after posting consecutive victories by scores of 6-3 and 4-3.
Washington has been productive offensively, batting .246 with 372 runs, 583 hits, and 89 home runs. The Nationals own a .323 on-base percentage and a .419 slugging percentage. Their pitching staff carries a 4.66 ERA and a 1.39 WHIP while allowing opponents to hit .255. Washington has also accumulated 253 walks and 537 strikeouts.
The biggest strength for Washington is its offense. The Nationals lead Seattle in batting average, runs scored, hits, on-base percentage, and slugging percentage. Their ability to generate runs consistently has helped offset some pitching challenges throughout the season.
Seattle Mariners vs Washington Nationals Picks and Prediction
Seattle Mariners vs Washington Nationals Pick
- Pick: Seattle Mariners Moneyline
I like Seattle in this matchup. The Mariners own the better pitching statistics across the board and enter with a significantly lower team ERA and WHIP than Washington. Seattle also has a slight edge in overall record. While the Nationals have been the stronger offensive club, Seattle's ability to prevent runs gives the Mariners the advantage.
Seattle Mariners vs Washington Nationals Total Pick
- Take the over if the total is set at 8.5.
I would lean over if the total is set at 8.5. Washington has scored 372 runs this season and recently played an 11-10 game. The Nationals own the stronger offensive numbers overall, while Seattle has hit 90 home runs. With both teams capable of generating offense, this matchup has the potential to produce enough runs to clear that number.
Final Score Prediction: Seattle Mariners 6 – Washington Nationals 5
This prediction was written before the completion of game play on Friday.
Never Tried Picks and Parlays? Now Is Your Chance
- Get your first daily picks package for ONLY $1 using coupon code BUCK
- If the pick loses, we credit your account with 3 Flex Picks
- If the pick wins, we still give you 1 Flex Pick on the house
- Win or lose, you walk away ahead. One dollar. No catch.
Up To $1500 in Bonus Bets Paid Back if your First Bet Does Not Win
New Users – Bet $5 Get $200 in Bet Reset Tokens for 5 Days
New DraftKings Customers: Spend $5+ Get $150 in Bonus Bets *Paid Within 14 Days
