See the Starting Lineup for Blue Jays vs Mariners – October 17, 2025

Toronto Blue Jays

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Seattle Mariners

Toronto Blue Jays Insights

• Kevin Gausman – Over/Under 5.5 Strikeouts (-135/+105)
  Kevin Gausman has a reverse platoon split and is fortunate enough to be facing 6 opposite-handed bats in today’s game.
  Explain: A pitcher with a reverse platoon split will perform better against opposite-handed hitters (i.e. a right-handed pitcher will be better against a left-handed hitter). Holding this advantage against several hitters can have a huge impact on whether a pitcher will perform well or struggle on any given day.
• George Springer – Over/Under 1.5 Total Bases (+125/-160)
  George Springer has seen a big increase in his exit velocity on flyballs this year; just compare his 96.4-mph average to last season’s 93.2-mph mark.
  Explain: Most home runs are flyballs, and the harder those flyballs are hit, the more often they turn into home runs. This is a strong indicator of power.
• Toronto Blue Jays – Moneyline (-110)
  The 2nd-worst projected batting order on the slate in terms of overall offensive ability is that of the the Toronto Blue Jays.
  Explain: A pitcher who faces a weak opposing offense will be more likely to exceed his usual performance, particularly in terms of hits and runs, in that game.

Seattle Mariners Insights

• Bryce Miller – Over/Under 2.5 Strikeouts (-145/+110)
  Out of all SPs, Bryce Miller’s fastball spin rate of 2509 rpm is in the 93rd percentile this year.
  Explain: Spin rate is a key component to fastball success in generating strikeouts and preventing runs.
• Cal Raleigh – Over/Under 0.5 Total Bases (-155/+120)
  Cal Raleigh is an extreme flyball batter and squares off against the strong outfield defense of Toronto (#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
  According to the leading projection system (THE BAT), the Seattle Mariners’ bullpen grades out as the 4th-best among all teams in Major League Baseball.
  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.