Guardians vs Mariners Picks, Hitter-vs-Pitcher Data & Betting Splits (SNB)

• The Guardians meet the Mariners in the first Sunday Night Baseball game of the season
• Seattle is looking salvage a split of the four-game season-opening series
• See my top Guardians vs Mariners picks for SNB, plus the odds and full batter-vs-pitcher stats

Jump to: ODDS || BvP STATS || PICKS || SPLITS

The Seattle Mariners (1-2, O/U) and Cleveland Guardians (2-1, O/U) conclude their four-game series at T-Mobile Park on Sunday Night Baseball this evening. First pitch is scheduled for 4:10 pm PT/7:10 pm ET.

The matchup on the mound features a pair of promising young arms. Emerson Hancock (4.90 ERA, 1.38 WHIP in 2025), a 6’4, 26-year-old righty, toes the rubber for Seattle against Slade Cecconi (4.30 ERA, 1.19 WHIP), who is, coincidentally, also a 6’4, 26-year-old righty.

If the Mariners are going to salvage a split of the four-game series, they will have to find a way to slow the insane roll of rookie DH Chase DeLauter, who has clubbed a record-setting four home runs in his first three big-league games. Below, I will break down the best-available odds for all betting markets and set out my top Mariners/Guardians pick.

Guardians vs Mariners Odds for Sunday Night Baseball

Despite a sluggish start to the season for both their bats and their arms, Seattle is a -140 home favorite on Sunday (best odds at bet365). Cleveland comes back at +125 (bestodds at BetMGM).

If you have access to the prediction markets at Kalshi, you can find better prices on both teams. Seattle to win is trading at 58¢ (equal to a -138 moneyline) while Cleveland to win is trading at 43¢ (equal to a +133 moneyline). Kalshi also has better prices on the run total: over 7.5 is trading at 52¢ (a.k.a. -108) with under 7.5 at 49¢ (+104).

Prediction Markets

SEA/CLE Prediction Markets

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Kalshi

Seattle

58%

Over 7.5

52%

Under 7.5

49%

Cleveland

43%

Predict

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Odds commentary as of 2:11 pm ET, March 29th. Check SBD’s MLB odds page for the latest lines.

Guardians vs Mariners Hitter-vs-Pitcher Stats

The table below lists the career statistics for Mariners hitters against both Cecconi and all active Cleveland relief pitchers, according to Sportradar data.

SEA Hitters vs Cecconi & CLE Bullpen

Only five Mariner hitters have ever seen Cecconi. Brendan Donovan is the lone Seattle hitter with a home run off the Cleveland starter, who is entering his third full season.

The table below lists the career stats for the Cleveland hitters against Hancock, who’s also entering his third full season.

CLE Hitters vs Hancock & SEA Bullpen

In 24 total plate appearances, the Guardians hitters have yet to take Hancock deep. Bo Naylor has the only extra-base hit, a double.

CLE Guardians vs SEA Mariners Picks & Best Bets

It’s still very early in the season and a lot of rust still needs to be kicked off. Cleveland’s big bats have been a little sharper in the first three games. Seattle has mashed seven home runs in the series, but Cal Raleigh, Julio Rodriguez, and Randy Arozarena only have one extra-base hit combined (a double) and one RBI.

Cleveland’s 1-2-3 hitters – Steven Kwan, Jose Ramirez, and dazzling rookie Chase DeLauter have 11 hits, nine RBI, and four homers, all from DeLauter. (The best price on another DeLuater long ball on Sunday is +440 at Fanatics.)

Cecconi ostensibly gives the Guardians a slight edge on the mound and Seattle’s bullpen has been disastrous so far. The Mariner relievers have a hideous 5.06 ERA heading into Sunday, and their 4.35 xFIP isn’t much better. Cleveland’s bullpen has a solid 3.38 ERA and an elite 2.82 xFIP. That’s not just a small-sample-size advantage; the Guardians also had a stronger pen last season (3.44 ERA, 3.98 xFIP vs 3.75 ERA, 4.04 xFIP).

I’m not saying the Guardians should be favored but, considering the volatility that comes with early-season baseball, I love the value on Cleveland at +133 at Kalshi.

Moneyline Pick: Cleveland Guardians (-133/43¢) at Kalshi

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Public Betting Splits for Sunday Night Baseball

In the outright winner market, the Mariners command 78.5% of the moneyline tickets but have drawn just 56.2% of the overall stake. The Guardians are pulling in a healthy 43.8% of the cash on just 21.5% of the tickets, suggesting larger wagers are backing the road underdogs.

A sharp-vs-public situation has materialized on the runline. Casual bettors are fine laying runs with the home team, as the Mariners hold 66.3% of the runline tickets. However, a staggering 87.1% of the total runline stake is riding on the Guardians +1.5.

Sunday’s MLB public betting splits show bettors are heavily anticipating offensive production, with the over attracting 78.2% of tickets and 77.6% of the handle.

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