The Kansas City Royals (40-47) and the Seattle Mariners (45-41) wrap up a 4-game series Thursday. First pitch from T-Mobile Park is scheduled for 10:10 p.m. ET (MLB.TV Free Game of the Day). Let's analyze BetMGM Sportsbook's MLB odds around the Royals vs. Mariners odds and make our expert MLB picks and predictions for the best bets.

The Seattle offense is rolling, and Seth Lugo won't be able to stop this unit tonight, as our MLB betting picks for Thursday, July 3, 2025 explain.

The Kansas City Royals take on the Seattle Mariners tonight in the third installment of this year’s Battle for Grass Creek. They split the first two games with the winning team plating six in each of them. A victory tonight would secure at least a split in this rare four-game series.

Salvador Perez went 3-for-5 with two doubles and three RBIs as the Kansas City Royals defeated the host Seattle Mariners 6-3 on Tuesday. Five Royals combined for 4 1/3 innings of scoreless, one-hit relief as Kansas City won for just the second time in the past 10 games.