Pirates vs Mariners Prediction, Pick, Odds for Saturday, July 5

Pirates vs Mariners Prediction, Pick, Odds for Saturday, July 5 article feature image
Credit:

Photo by Tim Heitman-Imagn Images. Pictured: Luis Castillo

The Seattle Mariners host the Pittsburgh Pirates on July 5, 2025. First pitch from T-Mobile Park is scheduled for 10:10 p.m. ET; the game will be broadcast on Fox Sports 1.

The Mariners shut out the Pirates 6-0 in the opener of this three-game series. Luis Castillo will toe the rubber for the home team tonight, and Mike Burrows will oppose him for Pittsburgh.

Find my MLB betting preview and Pirates vs Mariners prediction below, as well as probable pitchers, betting trends and more.

Quickslip

Header First Logo
Header Second Logo

My Pirates vs Mariners Prediction

  • Pirates vs Mariners picks: Under 7 (+105, BetMGM)

My Pirates vs Mariners best bet is Under 7 total runs for this game. Make sure to find the best odds by checking our live MLB odds page.


Pirates vs Mariners Odds

Pirates Logo
Saturday, Jul 5
10:10 p.m. ET
Fox Sports 1
Mariners Logo
Pirates Odds
SpreadTotalMoneyline
+1.5
-155
7
-125o / 105u
+145
Mariners Odds
SpreadTotalMoneyline
-1.5
+125
7
-125o / 105u
-175
Odds via BetMGM. Get up-to-the-minute MLB odds here.
BetMGM Logo

Pirates vs Mariners Projected Starting Pitchers

RHP Mike Burrows (PIT)StatRHP Luis Castillo (SEA)
1-2W-L4-5
0.2fWAR (FanGraphs)1.0
4.15 / 4.33ERA /xERA3.55 /4.73
4.73 / 3.77FIP / xFIP4.13 / 4.36
1.30WHIP1.29
16.9K-BB%11.5
34.7GB%40.6
91Stuff+98
101Location+103

Pirates vs Mariners Preview

Mike Burrows' stats might not inspire much confidence at first glance, but the Pittsburgh starter has a 2.73 ERA since the start of June, allowing more than two runs just once in six outings.

He might not go deep into games, although that should not be a problem since the Pirates have a top-10 bullpen with a 3.67 ERA.

The Mariners will send their former ace, Luis Castillo, to the mound. He is not the pitcher he once was, but this is the Pirates offense we are talking about. Pittsburgh ranks 28th in baseball with 81 wRC+ and dead last in ISO with .112.

In his last outing against the Texas Rangers, Castillo only gave up one run in six complete innings. He has a 2.60 ERA at home compared to his 4.67 ERA on the road.

Castillo thrives in T-Mobile Park, which ranks last in run production, according to Baseball Savant's Park Factors.

Seattle kept Pittsburgh scoreless yesterday, and although that might not be repeated today, a low score remains likely, which aligns with our Bet Labs recommendation, using the Public Fades Humidity = Unders system.


Pirates vs Mariners Prediction, Betting Analysis

MLB Icon
Evan Abrams / Bet Labs – Public Fades Humidity = Unders
the average humidity is between 45% and 95%
the home team's 5 Game over percentage is between 0% and 40%
the temperature is between 54 and 97 degrees
the wind direction is From Right or Left To Right or From Left or Right To Left or In or None
the o/u change from open to close is between -1 and 0
the over/under % is between 6% and 29%
the game was played during the 2025 or 2024 or 2023 or 2022 or 2021 or 2020 season
betting on the Under
the game is played during the Regular season
$8,990
WON
272-164-13
RECORD
62%
WIN%

This system capitalizes on an overlooked weather edge in MLB totals betting. It focuses on regular-season games where elevated humidity —ranging from 45 to 95— intersects with moderate temperatures and neutral wind patterns.

Despite assumptions that humidity boosts offense, public bettors are fading these conditions, which actually correlate with suppressed scoring in certain environments.

In these spots, the home team has stayed under in recent games, with their five-game over rate sitting below 40, suggesting low offensive rhythm.

The market has also subtly corrected, with the total dropping from open to close, and the overall percentage of bets on the over remains modest, ranging from 6 to 29%. These indicators combine to identify under-the-radar under spots where public narratives misalign with actual scoring trends.

Pick: Under 7 (+105, BetMGM)


Pirates vs Mariners Betting Trends


Pirates vs Mariners Weather


Get the latest coverage on MLB Weather.
About the Author
Action Network is a team of seasoned sports betting experts specializing in a broad range of sports, from the NFL and NBA to less mainstream options like cricket and darts. Their staff includes well-known analysts like Sean Koerner and Stuckey, recognized for their accurate predictions and deep sports knowledge. The team is dedicated to delivering expert analysis and daily best bets, ensuring bettors are well-informed across all major sports.

Follow Action Network Staff @ActionNetworkHQ on Twitter/X.

This site contains commercial content. We may be compensated for the links provided on this page. The content on this page is for informational purposes only. Action Network makes no representation or warranty as to the accuracy of the information given or the outcome of any game or event.