Jul 5, 2025; Seattle, Washington, USA; Pittsburgh Pirates pitcher Isaac Mattson (72) throws out Seattle Mariners designated hitter Jorge Polanco (7) on a ground ball during the seventh inning at T-Mobile Park. Mandatory Credit: John Froschauer-Imagn Images

Pittsburgh Pirates vs Seattle Mariners Prediction 07/06/2025 Picks

Pick details

Pittsburgh (38-52) vs Seattle (47-42)

July 6, 2025 at 04:10 PM EDT

The Line: Betting Odds: Seattle +1.5 — Over/Under: +6.5

(Get latest betting odds)


The Pittsburgh Pirates and Seattle Mariners meet Sunday in MLB action at T-Mobile Park. Here’s a Pittsburgh Pirates vs Seattle Mariners Prediction. This article will include a Pittsburgh Pirates vs Seattle Mariners Pick.

Pittsburgh Pirates Betting Preview

The Pittsburgh Pirates are 38-52 on the year and play the Royals and Twins next. The Pittsburgh Pirates are batting .232 on the season, have a .304 OBP, and a .343 slugging percentage. The Pittsburgh Pirates pitching staff has a 3.64 ERA and a 1.19 WHIP. Bryan Reynolds leads the Pittsburgh Pirates with 76 hits and 45 RBI, while Ke’Bryan Hayes and Andrew McCutchen have combined for 147 hits and 60 RBI. 

Paul Skenes gets the ball for the Pittsburgh Pirates, and he is 4-7 with a 2.03 ERA and 115 strikeouts this season. This will be Skenes’ second career game against the Seattle Mariners.

Seattle Mariners Betting Preview

The Seattle Mariners are 47-42 on the year and play the Yankees and Tigers next. The Seattle Mariners are batting .247 on the season, have a .323 OBP, and a .407 slugging percentage. The Seattle Mariners pitching staff has a 3.81 ERA and a 1.26 WHIP. Julio Rodriguez leads the Seattle Mariners with 90 hits and 43 RBI while J.P. Crawford and Cal Raleigh have combined for 177 hits and 105 RBI.

George Kirby gets the ball for the Seattle Mariners, and he is 2-4 with a 4.85 ERA and 41 strikeouts this season. Kirby is 1-1 with a 7.59 ERA and 9 strikeouts in his career against the Pittsburgh Pirates.

Why the Seattle Mariners will win

The Pirates have lost each of their last three games as road favorites after playing the previous day.
The home team has won 11 of the Pirates’ last 12 games.
The Pirates have failed to cover the run line in six of their last seven day games against American League opponents that held a winning record.
The Mariners have covered the run line in nine of their last 11 games as home underdogs after playing the previous day.
The Mariners have led after 5 innings in four of their last five day games against the Pirates.
The Pirates have lost the first inning in three of their last four games against opponents that held a winning record at T-Mobile Park.
The Mariners have led after 3 innings in four of their last five games against the Pirates at T-Mobile Park.

Why the Pittsburgh Pirates will win

The Pirates have won five of their last six games after playing the previous day.
The Mariners have lost four of their last five games following a home win.
The Mariners have failed to cover the run line in each of their last six home games against National League opponents following a win.
The Pirates have covered the run line in 10 of their last 11 road games against AL West opponents.
The Pirates have led after 3 innings in three of their last four day games against opponents that held a winning record.
The Pirates have led after 5 innings in three of their last four day games.

Seattle Mariners Player Prop Facts

Dylan Moore has hit a home run in each of his four previous appearances at T-Mobile Park against NL Central opponents that held a losing record.
George Kirby has recorded a win in each of his last three appearances in day games against teams that held a losing record.
Randy Arozarena has recorded at least one Double in four of the Mariners’ last five games as underdogs.
George Kirby has recorded seven or more strikeouts in each of his last three appearances with the Mariners as home underdogs.
Julio Rodriguez has recorded at least one hit in each of the Mariners’ last 10 games as underdogs against NL opponents.
Cal Raleigh ranks 2nd amongst qualified players for Slugging Percentage (.646) this season.

Pittsburgh Pirates Player Prop Facts

Andrew McCutchen has hit a home run in three of his last eight appearances against the Mariners at T-Mobile Park.
Ke’Bryan Hayes has recorded at least one hit in each of his last nine appearances with the Pirates as favorites.
Andrew McCutchen has recorded a Double in three of his last four appearances with the Pirates as road favorites against AL opponents.
Paul Skenes ranks 2nd amongst qualified players for Earned Run Average (2.03) this season.

Pittsburgh Pirates vs Seattle Mariners Prediction

The Pirates are going to get some love in this game because Skenes is on the mound, but it doesn’t matter if the Pirates can’t score. The Pirates have been shutout in their last two games. The Mariners are playing some of their better ball of the season, and Kirby is coming off a great June where he allowed 28 hits and 12 runs in 34 innings. Kirby has allowed six hits and two runs in his last 12 innings. I’ll fade one of the best pitchers in baseball. Give me the Mariners. 

Randy Chambers's Pick: Seattle Mariners

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