The Seattle Mariners head to Progressive Field on Sunday, June 28, 2026, to finish up their series against the Cleveland Guardians. New users can take advantage of the latest FanDuel Sportsbook promo code offer to potentially secure $350 in bonus bets by placing a $5 wager every day for seven straight days.

This introductory promotion gives new players a chance to establish their sports betting portfolio over their first week on the platform. By utilizing the FanDuel Sportsbook promo code offer, you will receive $50 in bonus bets each day you make a qualifying $5 cash wager for seven consecutive days, adding up to a maximum value of $350.
This offer is active across all legal US states where the platform operates, including Ohio, Arizona, Colorado, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, New Jersey, New York, North Carolina, Pennsylvania, Tennessee, Virginia, West Virginia, and Wyoming.
Before diving into the baseball action, make sure you understand the small print behind the promotion:
All users must be at least 21 years old to create an account and participate.
A minimum first deposit of $5 cash is required after your registration.
You must place a real cash wager of at least $5 each day for seven consecutive days.
You receive $50 in bonus bets for each day a qualifying bet is tracked, up to $350 total.
All awarded bonus bets will expire within seven days of being credited to your balance.
Bonus bets hold a 1x playthrough requirement and cannot be withdrawn directly as cash.
Find more about this promotional offer in our FanDuel Sportsbook review.
This Sunday afternoon contest features two American League squads battling out their summer stretch. Both the Cleveland Guardians (43-40) and Seattle Mariners (42-42) enter this game right around the .500 mark, making every single victory crucial for their respective wildcard or divisional hopes.
The pitching matchup showcases Emerson Hancock (5-4, 3.60 ERA) on the mound for Seattle, while Cleveland answers back with right-hander Gavin Williams (9-4, 3.82 ERA). Williams has been a workhorse for Cleveland this season, stringing together a long run of starts lasting five or more innings. Meanwhile, Seattle's young lineup, featuring stars like Julio Rodriguez, will look to jump on his fastballs early. Cleveland's bats, led by Travis Bazzana and Brayan Rocchio, want to maximize base runners on their home turf. Fans looking for an edge can use the current FanDuel Sportsbook promo code deal to get closer to the diamond action.
Below are the live baseball betting lines available on the platform for this Sunday matchup:
| Team | Spread | Moneyline | Total (O/U) |
|---|---|---|---|
| Seattle Mariners | -1.5 (+164) | -106 | Over 7.5 (-105) |
| Cleveland Guardians | +1.5 (-200) | -110 | Under 7.5 (-115) |
Odds taken from FanDuel Sportsbook on Sunday, June 28, 2026, at 9:00 AM ET. Lines are subject to change before the first pitch.
To get the most out of this multi-day structure, you should focus on smart bankroll management and disciplined selections.
Day 1 Focus: Place your very first $5 cash bet on a highly probable outcome, such as the Guardians covering the +1.5 run line at home, which activates your first $50 bonus allotment regardless of whether the bet wins or loses.
Track the Calendar: Because the FanDuel Sportsbook promo code promotion requires a wager every day for seven straight days, set a small daily budget of exactly $5 for the next six days to ensure you hit the minimum requirement without overextending.
Diversify Across Markets: Don't feel obligated to place your subsequent daily wagers solely on high-risk parlays. Look at standard moneylines, over/under totals, or basic player props over the next week to complete the promotional cycle.
Date and Time: Sunday, June 28, 2026, at 1:40 PM ET
Location: Progressive Field, Cleveland, Ohio
TV Channel: CleGuardians.TV, Mariners.TV
Streaming: Fubo, MLB.tv
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