Preview the July 3 matchup between the Seattle Mariners and Kansas City Royals with odds over/under, game spread, betting lines and more.

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.

Seattle took game 3 of the series, 3-2, to go up 2-1 over Kansas City with the final meeting on deck. The Royals are in a slump right now with a 2-9 record over the past 11 games compared to the 3-1 record for the Mariners in the last four and 7-4 mark in the previous 11.