The Seattle Mariners (50-44) travel to Coors Field Tuesday to play the host Colorado Rockies (41-53). The opener of their two-game interleague series is set for an 8:40 p.m. ET first pitch. Let’s analyze BetMGM Sportsbook‘s lines around the Mariners vs. Rockies odds with MLB picks and predictions.
Season series: Tied 1-1.
LHP Marco Gonzales is Seattle’s projected starter. Gonzales is 1-5 with a 5.88 ERA (56 2/3 IP, 37 ER), 1.47 WHIP, 3.3 BB/9 and 7.8 K/9 over 11 starts.
- Last outing: No-decision with 5 2/3 IP, 3 ER, 7 H, 1 BB and 3 K in Seattle’s 7-3 victory over the Los Angeles Angels July 9.
- 2021 road splits: 1-3 with a 6.98 ERA (19 1/3 IP, 15 ER), 22 H, 8 BB and 17 K in four starts.
RHP German Marquez makes his 20th start for the Rockies. Marquez is 8-6 with a 3.36 ERA (112 1/3 IP, 42 ER), 1.14 WHIP, 3.4 BB/9 and 9.1 K/9 this year.
- Last outing: Win, 3-0, with 7 IP, 0 ER, 3 H, 1 BB and 9 K at the San Diego Padres July 10.
- Marquez beat the Mariners in Seattle June 23 with a stat line of 8 IP, 1 ER, 2 H, 0 BB and 7 K in Colorado’s 5-2 win.
- vs. Mariners on the current roster: 45 at-bats with a .178/.213/.311 slash line, 10/1 K/BB rate, 2 HR and 5 RBIs.
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Mariners at Rockies odds, lines, picks and prediction
MLB odds courtesy of BetMGM; access USA TODAY Sports for a full list. Odds last updated at 2:40 p.m. ET.
- Money line: Mariners +145 (bet $100 to win $145) | Rockies -175 (bet $175 to win $100)
- Against the spread/ATS: Mariners +1.5 (-125) | Rockies -1.5 (+105)
- Over/Under: 11 (O: -105 | U: -115)
Prediction
Rockies 6, Mariners 2
Money line (ML)
PASS with a slight “lean” to the Rockies (-175) because they are 32-19 at home this season and 15-12 vs. lefty starters while the Mariners are 21-24 on the road and 30-31 against right-handed starters.
However, I’m staying away because -175 is too much to lay with the Rockies. Colorado will probably sell assets at the trade deadline since it is 18.5 games back of first in the NL West, and the Mariners are a feisty dog this year.
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Run line/Against the spread (ATS)
“LEAN” to the ROCKIES -1.5 (+105) for a half unit since Colorado has the best cover rate at home this season at 32-19 ATS, and Marquez has been dominant at Coors Field while Gonzales has been awful on the road this year.
For instance, Marquez is 6-1 with a 3.06 ERA in Colorado this season (3.89 road ERA), 1.12 WHIP (1.18 road WHIP) and has allowed only three home runs at Coors Field through 12 starts and 70 2/3 IP.
Comparing Marquez’s home splits against Gonzales’ road splits is where I see the value in Colorado’s run line at plus-money.
Over/Under (O/U)
“LEAN” to the UNDER 11 (-115) for a half unit as a “contrarian play” against a market that’s barreling into the Over for the obvious reason (Coors Field’s high altitude).
But, I like Marquez to shut down Seattle’s lineup Tuesday and the Rockies are just 7-11 O/U as a home favorite this season and these teams have a combined 13-17 O/U record when these starters take the mound.
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