Orioles vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for May 18

Odds updated as of 1:11 p.m.

The Baltimore Orioles will take on the Washington Nationals in MLB action on Sunday.

Before you do any MLB betting on this game at FanDuel Sportsbook, here's what you need to know.

Orioles vs Nationals Game Info

• Baltimore Orioles (15-29) vs. Washington Nationals (20-27)
• Date: Sunday, May 18, 2025
• Time: 1:35 p.m. ET
• Venue: Oriole Park at Camden Yards -- Baltimore, Maryland
• Coverage: MASN and MASN2

Orioles vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: BAL: (-184) | WSH: (+154)
• Spread: BAL: -1.5 (+106) | WSH: +1.5 (-128)
• Total: 9.5 -- Over: (-100) | Under: (-122)

Orioles vs Nationals Probable Starting Pitchers

Probable Pitchers: Zach Eflin (Orioles) - 3-1, 3.13 ERA vs Michael Soroka (Nationals) - 0-2, 6.43 ERA

The Orioles will call on Zach Eflin (3-1) against the Nationals and Michael Soroka (0-2). Eflin's team is 3-1-0 against the spread in his starts this season. Eflin's team won his only start as a favorite this season. The Nationals have failed to cover in each of the three games Soroka started that had a spread set by oddsmakers. The Nationals were the underdog on the moneyline for three Soroka starts this season -- they lost all of the games.

Orioles vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Orioles win (65%)

Orioles vs Nationals Moneyline

• The moneyline numbers for Orioles vs. Nationals reveal Baltimore as the favorite (-184) and Washington as the underdog (+154) on the road.

Orioles vs Nationals Spread

• The Orioles are hosting the Nationals and are favored by 1.5 runs (+106 to cover) on the runline. Washington is -128 to cover.

Orioles vs Nationals Over/Under

• The over/under for Orioles-Nationals on May 18 is 9.5. The over is -100, and the under is -122.

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Orioles vs Nationals Betting Trends

• The Orioles have won in nine, or 34.6%, of the 26 contests they have been named as odds-on favorites in this year.
• Baltimore has played as a favorite of -184 or more just one time this year and came away with a loss in that game.
• The Orioles and their opponents have gone over the total this season in 21 of their 44 opportunities.
• The Orioles are 14-30-0 against the spread in their 44 games with a line set by sportsbooks this season.
• The Nationals have put together a 17-18 record in games they were the underdog on the moneyline (winning 48.6% of those games).
• Washington has gone 3-6 when it has played as a moneyline underdog with odds of +154 or longer (33.3%).
• The Nationals have played in 45 games with an over/under set, and have combined with their opponents to go over the total 22 times (22-22-1).
• The Nationals have collected a 23-22-0 record against the spread this season (covering 51.1% of the time).

Orioles Player Leaders

• Cedric Mullins has seven doubles, eight home runs and 21 walks while batting .220. He has an on-base percentage of .324 and a slugging percentage of .427.
• Among qualifying hitters in baseball, his batting average ranks 134th, his on-base percentage ranks 90th, and he is 74th in slugging.
• Ryan O'Hearn leads Baltimore with 35 hits and an OBP of .387 this season. He's batting .294 and slugging .504.
• Among qualified hitters, he is 28th in batting average, 16th in on-base percentage and 28th in slugging percentage.
• Adley Rutschman is batting .215 with a .349 slugging percentage and 11 RBI this year.
• Rutschman takes a three-game hitting streak into this matchup. During his last five outings he is hitting .313 with two doubles and a walk.
• Jackson Holliday has five home runs, 16 RBI and a batting average of .269 this season.
• Holliday heads into this game on a four-game hitting streak. In his last five games he is hitting .292 with two doubles, a home run and four RBIs.

Nationals Player Leaders

• James Wood has an on-base percentage of .372, a slugging percentage of .536, and has 49 hits, all club-bests for the Nationals (while batting .274).
• Including all the qualifying hitters in the big leagues, his batting average puts him 51st, his on-base percentage is 35th, and he is 12th in slugging.
• C.J. Abrams is batting .301 with eight doubles, two triples, six home runs and 10 walks. He's slugging .522 with an on-base percentage of .360.
• Including all qualifying hitters, he ranks 18th in batting average, 44th in on-base percentage and 19th in slugging percentage.
• Nathaniel Lowe is batting .227 with eight doubles, eight home runs and 19 walks.
• Keibert Ruiz has seven doubles, two home runs and eight walks while hitting .283.

Orioles vs Nationals Head to Head

• 5/17/2025: 10-6 WSH (Favorite: Orioles, Spread: -1.5, Total: 10.5, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 5/16/2025: 4-3 WSH (Favorite: Orioles, Spread: -1.5, Total: 8.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 4/24/2025: 2-1 BAL (Favorite: Nationals, Spread: -1.5, Total: 8.5, Favorite Moneyline: -118, Underdog Moneyline: -100)
• 4/23/2025: 4-3 WSH (Favorite: Orioles, Spread: -1.5, Total: 9.5, Favorite Moneyline: -142, Underdog Moneyline: +120)
• 4/22/2025: 7-0 WSH (Favorite: Orioles, Spread: -1.5, Total: 9, Favorite Moneyline: -136, Underdog Moneyline: +116)
• 8/14/2024: 4-1 BAL (Favorite: Orioles, Spread: -1.5, Total: 8.5, Favorite Moneyline: -172, Underdog Moneyline: +144)
• 8/13/2024: 9-3 WSH (Favorite: Orioles, Spread: -1.5, Total: 9, Favorite Moneyline: -184, Underdog Moneyline: +154)
• 5/8/2024: 7-6 BAL (Favorite: Orioles, Spread: -1.5, Total: 8.5, Favorite Moneyline: -174, Underdog Moneyline: +146)
• 5/7/2024: 3-0 WSH (Favorite: Orioles, Spread: -1.5, Total: 8.5, Favorite Moneyline: -215, Underdog Moneyline: +180)
• 9/27/2023: 5-1 BAL (Favorite: Orioles, Spread: -1.5, Total: 7.5, Favorite Moneyline: -255, Underdog Moneyline: +210)

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