Washington Nationals vs San Francisco Giants Prediction 4/18/26 MLB Picks Today

The San Francisco Giants and the Washington Nationals meet Friday in MLB action from Nationals Park. We will look at this from a betting perspective and determine the best bets for this game. Here’s a San Francisco Giants vs. Washington Nationals prediction.

Starting Pitching Matchup

The San Francisco Giants will send out Adrian Houser for the start and Houser is 0-2 with a 5.06 ERA and 10 strikeouts this season. In his career, Houser is 0-0 with a 1.10 ERA and 14 strikeouts against the Nationals. Cade Cavalli will start this one for Washington and is 0-1 with a 4.60 ERA and 13 strikeouts this season. This will be Cavalli’s first career start against the Giants.

San Francisco Giants Recap

The San Francisco Giants come into this game looking to build on their 10-5 win over the Nationals from Friday’s matchup to sit at 8-12 this season. After this series, the Giants will head home for a series against the Los Angeles Dodgers.

Giants Win Back-To-Back Games

Luis Arraez has 23 hits with a double, 2 triples and 6 RBIs while Willy Adames has 21 hits with 10 doubles, 3 home runs and 6 RBIs. Matt Chapman has 23 hits with 4 doubles, a triple, a home run and 11 RBIs and Harrison Bader has a home run and 3 RBIs while Jung Hoo Lee has 17 hits with 6 doubles and 8 RBIs. Heliot Ramos has 16 hits with 2 doubles, a home run and 11 RBIs this season. Rafael Devers also has 17 hits with 2 doubles, 2 home runs and 7 RBIs but also has a team-high 26 strikeouts this season.

Washington Nationals Recap

The Washington Nationals come into this game looking to shake off their loss at the hands of the Giants last time out to sit at 9-11 this season. After this series, the Nationals will take on the Braves in a series at home.

Nationals Alternate Wins & Losses In 6 Straight

James Wood has 21 hits including 6 doubles, 6 home runs and 18 RBIs while Daylen Lile has 24 hits with 5 doubles, a home run and 8 RBIs. CJ Abrams has 24 hits with 3 doubles, 6 home runs and 19 RBIs and Brady House has 17 hits with 4 doubles, 2 home runs and 8 RBIs. Luis Garcia Jr. has 14 hits with 3 doubles, a triple, a home run and 10 RBIs as well on the year.

San Francisco Giants @ Washington Nationals Betting Trends: April 18, 2026

• Probable Starting Pitcher: Cade Cavalli      Record this season: 0-1      ERA: 4.60
• Home Record: 0-0
• Last 5 against Giants: –

Why the Washington Nationals will win

• The Giants have lost each of their last seven Saturday games as road favorites against National League opponents.
• The Nationals have won four of their last five games as underdogs following a loss.
• The Giants have failed to cover the run line in each of their last nine Saturday games as favorites against National League opponents.
• The Nationals have covered the run line in 14 of their last 15 Saturday games as underdogs against NL West opponents.
• The Giants have lost the first inning in three of their last four day games against opponents that held a losing record.
• The Giants have trailed after 5 innings in four of their last five games as favorites.
• The Giants have trailed after 3 innings in four of their last five games as favorites.

• Probable Starting Pitcher: Adrian Houser      Record this season: 0-2      ERA: 5.06
• Road Record: 0-2
• Last 5 against Nationals: 0-1

Why the San Francisco Giants will win

• The Nationals have lost 10 of their last 11 home games against National League opponents.
• The Giants have won five of their last six road games against the Nationals.
• The Nationals have failed to cover the run line each of their last eight home games against teams that held a losing record.
• The road team has covered the run line in 21 of the Nationals’ last 25 games.
• The Nationals have trailed after 5 innings in each of their last four home games against opponents that held a losing record.
• The Nationals have trailed after 3 innings in four of their last five home games against NL West opponents.

Total Runs Facts

• Nine of the Giants’ last 10 day games after playing the previous day have gone UNDER the total runs line.
• Seven of the Nationals’ last eight home games against National League opponents have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in eight of the Giants’ last nine day games at Nationals Park.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in each of the Nationals’ last four day games.

Washington Nationals Player Prop Facts

• CJ Abrams has hit a home run in three of the Nationals’ last five games against NL West opponents.
• Keibert Ruiz has recorded at least one hit in each of his last six appearances with the Nationals as home underdogs.
• CJ Abrams ranks 2nd amongst qualified players for On Base Percentage (.469) this season.

San Francisco Giants Player Prop Facts

• Rafael Devers has hit at least one home run in three of the Giants’ last four day games against NL East opponents that held a losing record.
• Adrian Houser has recorded four or more strikeouts in each of his last five road appearances against NL opponents that held a losing record.
• Heliot Ramos has recorded at least one hit in each of his last 12 appearances with the Giants as road favorites.

Matchup/League Facts

• The Nationals rank 30th in the league for home runs allowed this season (38).
• The Nationals rank 30th in the league for hits allowed this season (191).
• The Giants rank 30th in the league for steals this season (5).
• The Giants rank 30th in the league for walks this season (41).

San Francisco Giants vs. Washington Nationals Prediction

I’m on the Nationals in this one. I just still don’t trust this Giants team consistently, and one random offensive outburst isn’t going to change that here. Houser hasn’t been the same ace level arm he was for the White Sox early last season, and the Nationals have still posted an explosive offense for much of the season against right-handed pitching and I think the Nats get some revenge here. Give me Washington.