Discover Odds and Betting Trends for Mariners vs Royals – 5/23/26

Seattle Mariners

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Kansas City Royals

Seattle Mariners Insights

• Seattle Mariners – Moneyline (-130)
  The Seattle Mariners outfield defense profiles as the 3rd-weakest among all the teams today.
  Explain: Defense is an integral part of preventing (or, in this case, allowing) hits and runs.
• Jhonny Pereda – Over/Under 0.5 Hits (-180/+135)
  Jhonny Pereda is an extreme groundball hitter and faces the strong infield defense of Kansas City (#1-best of all teams on the slate today).
  Explain: This player’s skill set matches up poorly with the opposing team’s defensive strength, which may lead to worse-than-usual performance.
• Seattle Mariners – 2H Moneyline
  The Seattle Mariners bullpen grades out as the 5th-best in MLB, per the leading projection system (THE BAT).
  Explain: Most bettors only consider the starting pitcher, but a strong bullpen sneakily creates a tougher matchup for the opposing offense and suppresses a game’s runs.

Kansas City Royals Insights

• Stephen Kolek – Over/Under 16.5 Pitching Outs (-125/-105)
  Stephen Kolek has averaged 17.7 outs per outing since the start of last season, checking in at the 93rd percentile.
  Explain: A pitcher who averages more outs per start than his Outs prop may be a good bet to go over, and visa-versa for the under.
• Vinnie Pasquantino – Over/Under 1.5 Total Bases (+125/-165)
  Over the past week, Vinnie Pasquantino’s Barrel% has experienced a negative regression, plummeting from his seasonal rate of 8.8% down to 0%.
  Explain: Barrel% measures how often a player hits the ball at the optimal exit velocity and launch angle and is a terrific measure of underlying power.
• Vinnie Pasquantino – Over/Under 1.5 Total Bases (+125/-165)
  Vinnie Pasquantino pulls many of his flyballs (38.2% — 94th percentile) and will be challenged by MLB’s deepest RF fences in today’s matchup.
  Explain: This player’s skill set does not match up particularly well with the park he’s in today, which may lead to worse-than-usual performance.

Betting Trends

• Kansas City Royals – 1st Five Innings (F5) Moneyline (+110)
  The Kansas City Royals have hit the 1st Five Innings (F5) Moneyline in 11 of their last 20 games at home (+5.85 Units / 21% ROI)
• Seattle Mariners – Over/Under 2.5 1st Five Innings (F5) Team Total (+120/-155)
  The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Under in 14 of their last 22 games (+5.45 Units / 20% ROI)
• Jac Caglianone – Over/Under 0.5 Singles (+110/-140)
  Jac Caglianone has hit the Singles Under in 16 of his last 20 games at home (+9.95 Units / 32% ROI)