Giants vs Nationals Prediction, Odds, Moneyline, Spread & Over/Under for April 18

Odds updated as of 1:11 a.m.

The MLB's Saturday schedule includes the San Francisco Giants taking on the Washington Nationals.

All the info you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Giants vs Nationals Game Info

• San Francisco Giants (8-12) vs. Washington Nationals (9-11)
• Date: Saturday, April 18, 2026
• Time: 4:05 p.m. ET
• Venue: Nationals Park -- Washington, District of Columbia
• Coverage: Nationals.TV and NBCS-BA

Giants vs Nationals Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SF: (-118) | WSH: (+100)
• Spread: SF: -1.5 (+136) | WSH: +1.5 (-164)
• Total: 9.5 -- Over: (-110) | Under: (-110)

Giants vs Nationals Probable Starting Pitchers

Probable Pitchers: Adrian Houser (Giants) - 0-2, 5.06 ERA vs Cade Cavalli (Nationals) - 0-1, 4.60 ERA

This contest's pitching matchup is set, as the Giants will send Adrian Houser (0-2) to the mound, while Cade Cavalli (0-1) will answer the bell for the Nationals. Houser's team has not covered in any of his three starts with a spread this season. This will be Houser's first start this season with his team as the moneyline favorite. The Nationals have a 3-1-0 record against the spread in Cavalli's starts. The Nationals have been the moneyline underdog in three of Cavalli's starts this season, and they went 1-2 in those matchups.

Giants vs Nationals Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Giants win (53.1%)

Giants vs Nationals Moneyline

• Washington is the underdog, +100 on the moneyline, while San Francisco is a -118 favorite despite being on the road.

Giants vs Nationals Spread

• The Giants are 1.5-run road favorites on the runline against the Nationals. The Giants are +136 to cover, and the Nationals are -164.

Giants vs Nationals Over/Under

• A combined run total of 9.5 has been set for Giants-Nationals on April 18, with the over at -110 and the under at -110.

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Giants vs Nationals Betting Trends

• The Giants have won in two of the six contests they have been named as odds-on favorites in this year.
• San Francisco has a record of 2-2 when favored by -118 or more this year.
• Contests with the Giants have gone over the total set by bookmakers in nine of 20 chances this season.
• In 20 games with a line this season, the Giants have a mark of 7-13-0 against the spread.
• The Nationals have been the moneyline underdog 19 total times this season. They've gone 9-10 in those games.
• Washington has an 8-10 record (winning 44.4% of its games) when it has played as a moneyline underdog of +100 or longer.
• The Nationals have had an over/under set by oddsmakers 20 times, and have combined with opponents to go over the total in 14 of those games (14-6-0).
• The Nationals have put together a 12-8-0 record against the spread this season (covering 60% of the time).

Giants Player Leaders

• Luis Arraez leads San Francisco with an OBP of .354, plus a team-best slugging percentage of .389. He's batting .319 on the season.
• Among all qualified hitters in the majors, he is 15th in batting average, 55th in on-base percentage, and 92nd in slugging.
• Matt Chapman leads San Francisco in slugging percentage (.405) thanks to six extra-base hits. He's batting .291 with an on-base percentage of .333.
• Among qualifying hitters, his batting average places him 38th, his on-base percentage 86th, and his slugging percentage 85th.
• Chapman has picked up a hit in three straight games. During his last five outings he is hitting .238 with a double and four RBIs.
• Willy Adames has 21 hits and is batting .269 this season.
• Adames heads into this game with two games in a row with at least one hit. In his last five games he is hitting .300 with two doubles, a home run and an RBI.
• Jung Hoo Lee has one home run, eight RBI and a batting average of .246 this season.
• Lee takes a four-game hitting streak into this game. During his last five outings he is batting .368 with two doubles, two walks and an RBI.

Nationals Player Leaders

• C.J. Abrams has racked up 24 hits with a .469 on-base percentage and a .682 slugging percentage, all club-bests for the Nationals. He's batting .364.
• Including all the qualified hitters in MLB, his batting average places him third, his on-base percentage is second, and he is fifth in slugging.
• Abrams hopes to build on an eight-game hitting streak in this matchup. In his last 10 games he is hitting .452 with three doubles, two home runs, four walks and six RBIs.
• James Wood has six doubles, six home runs and 14 walks while hitting .253. He's slugging .542 with an on-base percentage of .367.
• He is 84th in batting average, 45th in on-base percentage and 25th in slugging percentage in the majors.
• Daylen Lile has a .372 slugging percentage, which leads the Nationals.
• Luis Garcia is hitting .226 with three doubles, a triple, a home run and four walks.

Giants vs Nationals Head to Head

• 4/17/2026: 10-5 SF (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -154, Underdog Moneyline: +130)
• 8/10/2025: 8-0 WSH (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 8/9/2025: 4-2 WSH (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -166, Underdog Moneyline: +140)
• 8/8/2025: 5-0 SF (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -168, Underdog Moneyline: +142)
• 5/25/2025: 3-2 SF (Favorite: Giants, Spread: -1.5, Total: 8, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 5/24/2025: 3-0 WSH (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 5/23/2025: 4-0 SF (Favorite: Nationals, Spread: -1.5, Total: 8, Favorite Moneyline: -112, Underdog Moneyline: -104)
• 8/8/2024: 9-5 SF (Favorite: Giants, Spread: -1.5, Total: 8.5, Favorite Moneyline: -120, Underdog Moneyline: +102)
• 8/7/2024: 7-4 SF (Favorite: Giants, Spread: -1.5, Total: 7.5, Favorite Moneyline: -158, Underdog Moneyline: +134)
• 8/6/2024: 11-5 WSH (Favorite: Giants, Spread: -1.5, Total: 9, Favorite Moneyline: -118, Underdog Moneyline: -100)

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