Chicago Cubs vs Seattle Mariners Picks and Predictions June 21st 2025

Chicago Cubs vs Seattle Mariners MLB Sat, Jun 21, 13:20 pm.
Chicago Cubs
ML: -175
10
7
Seattle Mariners
ML: 140
Last Updated on

The Chicago Cubs (39–40) and Seattle Mariners (42–36) enter Saturday’s middle contest with contrasting trajectories. Seattle snapped an eight-game losing streak earlier this week before riding Cal Raleigh’s historic performance to a 9–4 win on Friday. The Mariners aim to build momentum for a late-season push in the AL Wild Card race, while the Cubs hope to avoid another skid and stay in contention in a crowded NL Central. For a deeper breakdown of today’s matchups, visit our MLB previews page.

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Cal Raleigh’s Historic Pace

Raleigh’s two-homer day was more than a statistical feat—it was a statement. His leadoff blast in the first inning off Justin Steele cleared the center-field wall and set the tone early. In the seventh, he stayed on a 96 mph fastball to left for a go-ahead two-run shot, snapping a 4–4 tie. With 29 homers to this point, he leads all catchers in Major League Baseball and has already surpassed Johnny Bench’s pre–All-Star break mark. Beyond power, Raleigh contributed a single, walk, stolen base and scored four times, underscoring his all-around impact.

Cubs’ Strategy to Contain Raleigh

Chicago’s game plan hinges on disrupting Raleigh’s rhythm. Manager David Ross has encouraged rookie Cade Horton to expand his pitch mix—working changeups and sliders early before challenging with heaters. Video scouts have noted Raleigh’s tendency to sit on inside fastballs, so mixing in high-spin curveballs at the top of the zone could force weaker contact. The Cubs infield will also adjust positioning on Raleigh’s pull tendencies, aiming to convert soft grounders and frayed swings into outs.

Pitching Matchup

Cade Horton (3–1, 3.47 ERA) makes just his eighth start, but his aggressive approach and strike-throwing prowess have earned praise. In his last outing, he fanned seven over 5⅔ shutout innings against Pittsburgh, showcasing both a sharp cutter and a late-breaking slider. Seattle counters with Emerson Hancock (3–2, 4.48 ERA), who blanked Cleveland over seven innings last Sunday. Hancock’s success stems from maintaining a heavy sinker early in counts, inducing ground balls, and trusting his changeup to neutralize left-handed bats. Saturday’s duel between two young arms could tilt the series.

Mariners’ Offensive Depth

While Raleigh garners headlines, Seattle’s lineup depth cannot be overlooked. Julio Rodríguez and Ty France provide complementary balance—Rodríguez’s leadoff speed and France’s gap power have kept opposing pitchers off balance. In Friday’s win, second baseman Dylan Moore chipped in with two hits and an RBI, demonstrating the contributions beyond the star catcher. Should the Cubs focus too heavily on Raleigh, Seattle’s secondary bats could exploit favorable matchups.

Betting Insights

Raleigh’s multi-dimensional threat has buoyed the home run and total bases markets, while today’s pitching duel impacts run-line projections. For personalized wagering strategies, explore our MLB picks and consult our expert betting guide for actionable advice on prop bets, over/unders, and live-game hedging techniques.

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By T. Franklin Smith | July 17, 2025
By T. Franklin Smith | July 11, 2025
By Rick Rockwell | July 11, 2025
spread
moneyline
over/under
Chicago Cubs
-
-
-175
O 12.5
100
Seattle Mariners
-
-
140
U 12.5
-125
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