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MLB Prop Bets: Washington Nationals vs San Francisco Giants (April 18, 2026)

The San Francisco Giants (8-12) face the Washington Nationals (9-11) at Nationals Park on Saturday at 4:05pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Adrian Houser is the probable pitcher for the Giants, while Cade Cavalli is the probable pitcher for the Nationals. The Giants are favored to win at -118, while the Nationals are at -102. The total runs line is set at 9.5, with OVER at -115 and UNDER at -105.

  • The Giants have a 9-9-2 O/U record this season (meaning nine games have gone over the total runs line, nine have gone under and two have resulted in a push). The Nationals have a 14-6-0 O/U record.

Scoring Insights

  • The Giants are averaging 3.4 runs per game this season (28th in the league). Comparatively, the Nationals are averaging +2.2 more at 5.6 runs (3rd).
  • In the field, the Giants are allowing 4.3 runs per game this season (15th in the league), while the Nationals are allowing an average of 6.3 runs (30th).

Let's take a look at how these teams perform in some other key statistical areas.

Batting Insights:

Batting Average

  • Looking at their batting averages this season, the Giants are at .248 (ranking 9th in the Major leagues), while the Nationals are batting .261 (4th).

Home Runs

  • In terms of total home runs this season, the Nationals have hit 22 (T8th in the Major Leagues). Meanwhile, the Giants have managed 12 (T29th).

Runs Batted In

  • Finally, looking at their runs batted in, the Nationals have been outstanding this season, recording 102 RBIs to rank 5th in the MLB. Comparatively, the Giants have performed poorly in this area, recording only 65 RBIs to rank 27th.

Pitching Insights:

Earned Run Average

  • The Nationals have an earned run average of 6.12 this season (29th in the Majors), while The Giants have an ERA of 4.22 (21st).

Strikeouts

  • Turning our attention to total strikeouts, the Giants have recorded 179 this season, ranking T10th in the MLB. Meanwhile, the Nationals rank T24th for total strikeouts, recording 152.

Opponent Batting Average

  • Opponents are batting an average of .270 against the Nationals this season (29th in the Major Leagues). Comparatively, the Giants' opponents are at .238 (16th).

First Innings Moneyline

  • Here are their first innings moneyline records in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Giants 3-4-13 2-1-7 1-3-6 1-1-4 2-3-9 0-0-0 1-2-7
    Nationals 6-5-9 2-2-3 4-3-6 0-1-0 6-4-9 0-0-0 2-3-5

Lead After Three Innings

The Giants are -105 to lead after three innings, while the Nationals are -125.

  • Here are their records after the first three innings in 2026.
    Total Home Road Favorite Underdog Neutral Last 10
    Giants 7-10-3 3-5-2 4-5-1 2-4-0 5-6-3 0-0-0 4-4-2
    Nationals 5-11-4 2-4-1 3-7-3 0-0-1 5-11-3 0-0-0 1-6-3

NRFI/YRFI

The NRFI market is paying -115 and the YRFI is paying -115.

  • The NRFI is 13-7 in Giants games this season. The Nationals have a 9-11 NRFI record.

Last Time They Met

The Giants recorded a 10-5 victory over the Nationals at Nationals Park yesterday. Heliot Ramos went yard en route to that victory, hitting a home run to go with 4 RBIs.