Mariners vs. Pirates Dunkel MLB Picks, Predictions and Prop Bets - June 23

The Seattle Mariners and Pittsburgh Pirates clash in the first of a three-game series on Tuesday at PNC Park, at 6:40 p.m. ET. George Kirby (5-7, 4.10 ERA) gets the start for the Mariners, who are 40-39 this season and first in the AL West. Mitch Keller (5-4, 4.92 ERA) is starting for the Pirates, who are 39-39 and fourth in the NL Central.

Despite being on the road the Mariners are a moderate moneyline favorite (-130) over the Pirates (+107). The over/under for the Mariners-Pirates game is set at 8.5.

Mariners vs. Pirates Odds, Game Time

• Game day: Tuesday, June 23, 2026
• Game time: 6:40 p.m. ET
• Location: Pittsburgh, Pennsylvania
• Stadium: PNC Park
• Favorite: Mariners (-130)
• Underdog: Pirates (+107)
• Over/under: 8.5

How to Watch Mariners vs. Pirates

• TV Channel: SportsNet PT and SEAM
• Live Stream: Fubo (Watch for free)

Bet now on FanDuel Sportsbook!

Mariners vs. Pirates: Betting the Moneyline

• The Mariners have won 52.8% of the games this season when they were the moneyline favorite (38-34).
• Pittsburgh has been victorious in 13, or 40.6%, of the 32 contests it has been chosen as underdogs in this season.
• Seattle has a record of 30-20 in games when bookmakers favor them by at least -130 on the moneyline.
• This season, the Pirates have come away with a win seven times in 17 chances when named as an underdog of at least +107 or worse on the moneyline.
• The implied moneyline probablility for this matchup gives the Mariners a 56.5% chance to win.
• The Pirates have an implied victory probability of 48.3% according to the moneyline set by oddsmakers for this matchup.

Mariners vs. Pirates: Betting the Spread & Total

• The Mariners have combined with opponents to hit the over on the total 38 times this season for a 38-38-3 record against the over/under.
• Pittsburgh's games have gone over the total in 44 of its 78 chances.
• The Mariners have put together a 30-49-0 record ATS this season (covering just 38% of the time).
• The Pirates are 38-40-0 against the spread in their 78 games with a line set by sportsbooks this season.