Pittsburgh Pirates vs
Seattle MarinersPredictions & Preview

Seattle Mariners Favored to Extend Winning Streak Against Pittsburgh Pirates in Interleague Matchup

On Saturday, July 5, 2025, the Pittsburgh Pirates will face off against the Seattle Mariners in an interleague matchup at T-Mobile Park in Seattle, Washington. The Mariners are currently favored to win with a moneyline of -165 and a total of 7.5 runs. Starting pitchers for the game will be Mike Burrows for the Pirates and Luis Castillo for the Mariners. For more information on this matchup and other MLB picks for Saturday's games, be sure to read our Pirates vs. Mariners prediction. The game is scheduled to begin at 10:10 PM ET.

Betting Odds

• Moneyline: Pirates +150 | Mariners -165
• Spread: Pirates +1.5 (-155) | Mariners -1.5 (+131)
• Total: Over/Under 7 (-110)
• Based on the moneyline, the implied probability that Seattle will win straight-up is 62%.

Pittsburgh vs Seattle Stats

Pittsburgh Pirates

The Pittsburgh Pirates are on a six-game winning streak, sweeping the New York Mets and St. Louis Cardinals in back-to-back series. They have only allowed four runs during this stretch, outscoring their opponents 30-4 and shutting down the Cardinals completely. Despite their recent success, the Pirates are currently at the bottom of the NL Central and trailing by nine games for the final wild card spot in the National League. Mike Burrows is set to start Friday night's game, with a 1-2 record, 4.15 ERA, and 1.30 WHIP in seven starts and one relief appearance this season. Although he has never faced Seattle before, he has shown promising stats in barrel percentage and expected ERA. According to power rankings, the Pirates rank 28th in offense, 5th in defense, with a 38-51 record this season.

Seattle Mariners Analysis

The Seattle Mariners recently split a four-game series against the Kansas City Royals, bringing their overall record to 46-42. They have a power ranking of 5 and are ranked #13 for offense, averaging 4.53 runs per game, and #19 for defense, allowing an average of 4.37 runs per game. Over their last 10 games, the Mariners have a 5-5 record and currently hold the final wild card spot in the American League. Their bullpen has performed well with a 3.72 ERA and a .183 batting average against in 38.2 innings of work. Starting pitcher Luis Castillo, with a 4-5 record and 3.55 ERA, is set to pitch next. In his career, he has a 6-5 record and 2.60 ERA in 15 starts against the Pittsburgh Pirates, who have had some success against him in the past.

Pittsburgh Pirates Winning Streak Threatened by Inconsistent Starter and Superior Mariners Pitching

The Pittsburgh Pirates have built a solid winning streak fueled by the performance of their pitching staff. Despite this, Mike Burrows stands out as the less consistent starter in the rotation. His lack of endurance often leads to early exits, putting strain on the bullpen. The relief pitching for the Pirates, however, has been exceptional recently, showcasing impressive statistics in terms of ERA and FIP over the past seven days. Despite their recent success, it is likely that the Pirates' momentum will wane soon. In this upcoming game, I anticipate that the Seattle Mariners will emerge victorious due to the superior pitching expected from Luis Castillo compared to Burrows, as well as the Pirates' lineup's struggles against top-tier pitchers.

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