The Seattle Mariners (33-31) and the Arizona Diamondbacks (31-34) open a 3-game series at Chase Field in Phoenix Monday. First pitch is scheduled for 9:40 p.m. ET (FS1). Let's analyze BetMGM Sportsbook's MLB odds around the Mariners vs. Diamondbacks odds and make our expert MLB picks and predictions for the best bets.

DBacks' Merrill Kelly gets the ball to open the Mariners series and is coming off seven scoreless innings on one hit at Atlanta in his last start.

The Seattle Mariners currently sit outside of the playoff picture, having just dropped five in a row to the Orioles and the Angels. A playoff team should have swept those series rather than going 1-5, and doing so would have Seattle delightfully positioned atop the AL West.