Mariners vs Cubs Prediction & Best Bets | Historic Raleigh Show Continues at Wrigley

by | Jun 21, 2025 | mlb

Cade Horton Cubs Starting Pitcher

The Seattle Mariners (38-36) look to build on their series-opening win as they face the Chicago Cubs (45-30) in Saturday afternoon action at Wrigley Field. After witnessing Cal Raleigh’s historic performance in Friday’s 9-4 victory, I’m focused on a pitching matchup that strongly favors the home team despite Seattle’s momentum. With Cubs rookie Cade Horton showing impressive command and the Mariners’ Emerson Hancock struggling with consistency, this matchup presents several intriguing betting angles worth exploring.

Quick Picks:

  • Best Bet: Chicago Cubs Moneyline (-169) ★★★★☆
  • Top Prop: Pete Crow-Armstrong Over 1.5 Total Bases (+125) ★★★★☆
  • Value Play: Under 12 Runs (-110) ★★★☆☆

Seattle Mariners vs Chicago Cubs Betting Odds & Latest Line Movement

Market Seattle Mariners Chicago Cubs
Moneyline +141 -169
Run Line +1.5 (-135) -1.5 (+115)
Total Over 12 (-110) Under 12 (-110)

Opening Line: Cubs -160, Total 11.5

Sharp Money Analysis: Where Pro Bettors Are Placing Their Wagers

Since opening, we’ve seen modest movement toward the Cubs, with the line moving from -160 to -169 despite Seattle’s impressive offensive showing yesterday. This signals professional respect for the pitching mismatch that favors Chicago. More telling is the total, which has ticked up from 11.5 to 12 despite Seattle’s bullpen being relatively well-rested. The sharps are recognizing that Hancock’s inconsistency creates significant run potential, particularly at Wrigley where summer conditions can transform it into a hitter’s paradise.

Pitching Matchup: Emerson Hancock vs Cade Horton – Who Has the Edge?

Seattle Mariners: Emerson Hancock (3-2, 4.48 ERA)

  • Struggling with command issues, evidenced by 21 walks in 62.1 innings
  • Poor 7.1 K/9 rate limits his ability to escape jams
  • Has allowed 5+ hits in six consecutive starts
  • Particularly vulnerable to left-handed hitters (.281 BAA)

Chicago Cubs: Cade Horton (3-1, 3.47 ERA)

  • Exceptional control with just 8 walks in 36.1 innings (2.0 BB/9)
  • Generating soft contact with 52% ground ball rate
  • 7.2 K/9 rate while maintaining efficiency (averaging 5.1 IP per start)
  • Significantly better at Wrigley (2.78 ERA) than on the road

Advantage: Chicago Cubs. Horton’s command advantage is substantial, and his ground ball tendencies match up well against Seattle’s lineup that thrives on elevation.

Bullpen Breakdown

The Cubs’ bullpen has been a model of inconsistency this season, reflected in their committee approach to the closer role with seven different relievers recording saves. However, Brad Keller and Julian Merryweather have emerged as reliable high-leverage options. Seattle counters with one of the game’s premier closers in Andres Munoz (18 saves), but their middle relief has been questionable. After yesterday’s game where Seattle used five relievers to Chicago’s four, both bullpens enter in similar condition. The slight edge goes to Seattle thanks to Munoz’s dominance, but it’s not enough to overcome the starting pitching disparity.

Key Betting Trends & Team Statistics That Matter

  • Cubs are 24-14 at Wrigley Field this season (63.2% win rate)
  • Seattle is just 18-17 on the road despite their strong pitching staff
  • Cubs have won 7 of their last 10 games against right-handed starters
  • Mariners are 4-7 in their last 11 interleague games
  • Chicago is 12-7 in one-run games, showing clutch performance in close contests
  • Cal Raleigh has hit 29 home runs this season, including two in yesterday’s game
  • Pete Crow-Armstrong has reached base safely in 17 consecutive games
  • The under is 8-3-1 in Cade Horton’s 12 starts this season

Pete Crow-Armstrong: Cubs’ Rising Star Finding His Stride

While Cal Raleigh deservedly grabbed headlines in the series opener, Cubs’ center fielder Pete Crow-Armstrong continues his breakout 2025 campaign. Currently batting .270 with 20 home runs, 60 RBI, and 23 stolen bases, PCA has emerged as a legitimate five-tool star and MVP candidate. What makes him particularly dangerous today is his success against right-handed pitchers with fringe command – precisely Hancock’s profile. With Crow-Armstrong’s patience improving (9 walks in his last 12 games) and Hancock’s tendency to work behind in counts, this matchup strongly favors the Cubs’ young star.

Wrigley Field Factor: How the Venue Influences Today’s Game

Today’s forecast calls for 82-degree temperatures with 12-15 mph winds blowing out to center field – conditions that typically transform Wrigley into a launching pad. However, Horton’s ground ball tendencies should mitigate some of these effects, while Hancock’s flyball vulnerability (1.3 HR/9) becomes even more concerning. The Cubs’ familiarity with these conditions cannot be overlooked, as their lineup is constructed to capitalize on exactly these types of days at Wrigley. Seattle, meanwhile, plays half their games in one of baseball’s most pitcher-friendly parks, making this environmental contrast particularly significant.

Expert Prediction & Best Bets for Mariners-Cubs Showdown

Primary Play: Chicago Cubs Moneyline (-169)

Despite the steep price, the Cubs offer substantial value here based on the pitching matchup alone. Horton’s precision stands in stark contrast to Hancock’s inconsistency, and when you factor in Chicago’s home-field advantage and Seattle’s road mediocrity, this becomes a clear play. The Mariners may have won the series opener behind Raleigh’s historic performance, but expecting lightning to strike twice would be foolish when facing a pitcher of Horton’s caliber. I’d play this confidently up to -180.

Strong Value Play: Under 12 Runs (-110)

While the conditions suggest runs, this total has been inflated by yesterday’s offensive explosion and the summer Wrigley narrative. Horton has consistently kept games under the total this season, and while Hancock presents some risk, Seattle’s bullpen is still strong enough to prevent a complete blowup. Look for a more moderate-scoring affair, with the game landing around 9-10 total runs.

Worth Considering: Pete Crow-Armstrong Over 1.5 Total Bases (+125)

This prop offers excellent value with Crow-Armstrong facing a right-hander who struggles against left-handed power. PCA has exceeded this total in 8 of his last 12 games, and with the wind blowing out at Wrigley, conditions are perfect for him to contribute extra-base hits. At plus money, this represents one of the day’s best prop values.

Player Props Worth Targeting in Today’s Matchup

Player Prop Odds Rating
Pete Crow-Armstrong Over 1.5 Total Bases +125 ★★★★☆
Cade Horton Over 4.5 Strikeouts -130 ★★★☆☆
Cal Raleigh To Hit a Home Run +290 ★★★☆☆
Julio Rodriguez Under 1.5 Total Bases -115 ★★★★☆

Final Thoughts: Cubs’ Home Advantage Trumps Mariners’ Momentum

Yesterday’s Cal Raleigh show was impressive, but baseball is about matchups, and today’s pitching comparison heavily favors Chicago. The Cubs have been dominant at Wrigley all season, and Cade Horton’s impressive command should neutralize Seattle’s power bats. While the Mariners’ offense showed life in the opener, expecting a repeat performance against a pitcher with Horton’s profile would be overreacting to a single game. The disciplined approach is backing the superior starter in favorable home conditions, which means riding with the Cubs despite the premium price.

Score Prediction: Chicago Cubs 6, Seattle Mariners 4

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