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Seattle Mariners vs. Washington Nationals – MLB – Predictions, Betting Lines, Odds and Trends

The Seattle Mariners (45-42) visit the Washington Nationals (30-58) to kick off a two-game series at Nationals Park, with first pitch at 7:05 PM ET on Tuesday. The Mariners are coming off a series victory over the Blue Jays, and the Nationals a series loss to the Braves.

The Mariners (-115 on the moneyline) take the field against the Nationals (-105) in an expected close matchup. The Seattle Mariners will give the start to Chris Flexen (5-8, 4.00 ERA), who is looking for win No. 6 on the season, and the Nationals will turn to Josiah Gray (7-5, 4.14 ERA). The game’s over/under is 10.5.

Mariners vs. Nationals Predictions

Mariners vs. Nationals Betting Odds

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Mariners vs. Nationals Last 10 Games Betting Performance


  • Seattle went 4-1 across the five games it was favored on the moneyline in its last 10 matchups.
  • In their last 10 outings, the Mariners and their opponents combined to go over the run total five times (all 10 of the games had set totals).
  • Seattle’s ATS record is 6-4-0 over its past 10 games.


  • Washington has played as the underdog in eight of its past 10 games and has won one of those contests.
  • In their last 10 games with a total, the Nationals and their opponents are 3-6-1 when it comes to hitting the over.
  • Washington has three wins against the spread in its last 10 chances.
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Mariners vs. Nationals Starting Pitcher Betting Trends

Projected starter: Chris Flexen

  • The Mariners are 7-9-0 ATS in Flexen’s 16 starts that had a set spread.
  • The Mariners have a 3-1 record in Flexen’s four starts this season when they were favored on the moneyline.
  • Flexen’s team is 6-10 over his 16 starts.
  • Flexen has had 16 starts that oddsmakers set a total for this season, and five of those games finished over the total.

Projected starter: Josiah Gray

  • When Gray starts, his team is 10-6-0 against the spread this season.
  • When he starts a game and his team is the underdog on the moneyline, they have a record of 6-7.
  • In games Gray has started, his team is 8-8.
  • In Gray’s 16 starts with a total, the teams have hit the over seven times.

Mariners Batting Leaders

  • Julio Rodriguez has collected a team-high 15 home runs.
  • Rodriguez ranks 31st in home runs and 45th in RBI among all batters in MLB play.
  • Ty France has a club-best 45 runs batted in and .306 batting average.
  • France ranks 83rd in homers and 38th in RBI among MLB hitters this season.
  • J.P. Crawford has 16 doubles, two triples, five home runs and 31 walks while hitting .266.
  • Eugenio Suarez has shown his power as he paces his team with 15 home runs.

Nationals Batting Leaders

  • Juan Soto leads Washington with 17 home runs this season. He’s batting .236 with 37 RBI.
  • Among all hitters in the big leagues, Soto is 19th in homers and 76th in RBI.
  • Soto has hit safely in five games in a row. In his last five games he is hitting .500 with two home runs, five walks and four RBI.
  • Josh Bell is a key run producer for Washington with a .307 average, 12 homers and 47 RBI.
  • Among all MLB hitters, Bell ranks 55th in homers and 29th in RBI.
  • Nelson Cruz leads Washington in RBI with 47 while batting .241 with eight home runs.
  • Cruz has hit safely in two games in a row. In his last five games he is hitting .235 with three walks and an RBI.
  • Cesar Hernandez has collected 84 hits this season and has an OBP of .301. He’s slugging .305 on the year.

Where To Watch Mariners vs. Nationals

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