The Miami Marlins host the San Francisco Giants on June 21, 2026. First pitch from LoanDepot Park is scheduled for 1:40 p.m. EDT. The game will be broadcast on NBCS-BA.
The Giants are favored by -144 on the moneyline and by -1.5 on the run line. The Marlins are +122 on the moneyline and +1.5 on the run line. The total is set at 8 runs.
Find my MLB picks and Giants vs Marlins prediction below, as well as probable pitchers, weather report, and more.
Giants vs Marlins Prediction
- Giants vs Marlins Pick: Under 8
My Giants vs Marlins best bet is on game totals. Make sure to find the best odds by checking our live MLB odds page.
Giants vs Marlins Odds
| Giants Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +114 | 8 -122o / -100u | -144 |
| Marlins Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -137 | 8 -122o / -100u | +122 |
- Giants vs Marlins moneyline: Giants -144, Marlins +122
- Giants vs Marlins over/under: 8 (-122 / -100)
- Giants vs Marlins spread: Giants -1.5 (+114), Marlins +1.5 (-137)
Giants vs Marlins Probable Pitchers
| RHP Logan Webb (SFG) | Stat | RHP Ryan Gusto (MIA) |
|---|---|---|
| 4-4 | W-L | 0-2 |
| 1.8 | fWAR (FanGraphs) | 0.1 |
| 3.46 / 3.71 | ERA / xERA | 7.24 / 6.47 |
| 2.98 / 3.39 | FIP / xFIP | 4.64 / 4.71 |
| 14.9% | K-BB% | 7.6% |
| 53.7% | GB% | 43.1% |
| .296 | BABIP | .347 |
| 101 | Stuff+ | 96 |
| 107 | Location+ | 102 |
Giants vs Marlins MLB Betting Preview
The San Francisco Giants come into this matchup with a 31-45 record and are 17-25 on the road. Despite the team’s struggles, Logan Webb has been in excellent form lately and gives San Francisco a chance every time he takes the mound.
Webb has allowed one run or fewer while pitching at least seven innings in each of his last three starts. That level of consistency has been one of the few bright spots for the Giants this season.
The Miami Marlins, meanwhile, are 39-38 on the year and have been strong at home with a 25-16 record. They’ll look to continue that success against one of the National League’s toughest pitchers.
One player to watch for Miami is Kyle Stowers, who has had success against Webb in a limited sample. Stowers is 3-for-5 in his career against the Giants’ ace, with two doubles and a home run.
San Francisco Giants Betting Preview
Our Sunday Series Finale Under Bet Lab System highlights an edge where fatigue and scheduling create line value. On Sundays — typically day games following night games — hitters are often worn out by the end of a long week. Managers frequently use these final series games to rest key bats, leading to inconsistent lineups.
When the home team enters on a 1-2 game Over streak, oddsmakers often inflate totals between 8 and 9.5, leaving optimal value for offensive regression and the Under.
Today’s Giants-Marlins matchup perfectly activates this system. San Francisco features ace Logan Webb, who has been in elite form, allowing one run or fewer while pitching at least seven innings in three straight starts.
Though Miami boasts strong home numbers and Kyle Stowers has historically hit Webb well, Sunday daytime conditions heavily favor pitching depth over tired lineups. Bet the Under to cash in on this data-driven trend.
Pick: Under 8
