Author: Vladislav Musilek   

Tigers @ Mariners: How We Read the Run Line (+1.5)

MLB · Match Analysis

How we read it: Tigers +1.5 at Seattle

Detroit Tigers @ Seattle Mariners · Valdez vs Miller

Analysed by OPTIMUS II v1.6

The read MLB · Run line
Detroit Tigers +1.5 @ 1.518
1.00Unit
1.518Odds
1.518Min. odds
72.55%Model prob.

Note: this analysis is published for the archive after the game. It shows how our model read the matchup — it is not a live recommendation.

A near-even projection

The model projected an essentially even game — and when the run projection is that tight, the +1.5 run line becomes the key protection, covering a one-run Tigers loss as well as any Detroit win.

4.06Detroit
projected runs
4.12Seattle

The pitching matchup

Bryce Miller owned a 2.80 ERA, but his 3.77 FIP suggested a narrower edge over Framber Valdez than the ERA alone implied. Valdez carried a 4.41 ERA and a 4.14 FIP, and had just worked seven innings for only two earned runs in his most recent start.

Miller (SEA)
Starter
Valdez (DET)
2.80
ERA
4.41
3.77
FIP
4.14

Miller led both lines, but the FIP gap was far narrower than the ERAs — enough room for Detroit +1.5 to hold.

Offense and form

Detroit brought a 104 wRC+ season-long offensive profile and better recent form. Seattle held the bullpen and home-field edge, but neither side profiled as a clear multi-run favourite — the profile of a close game, which is exactly what the run line was built for.

Odds of 1.518 imply a 65.88% break-even. OPTIMUS II priced Tigers +1.5 at 72.55%, equivalent to fair odds of about 1.38. Lineups were unconfirmed at release, so the model applied a conservative haircut and the stake stayed at 1 unit.

Key statistics

  • Model run projection: Detroit 4.06, Seattle 4.12 — essentially even.
  • Miller (SEA): 2.80 ERA, but a 3.77 FIP that narrows the edge.
  • Valdez (DET): 4.41 ERA and a 4.14 FIP; seven innings, two earned runs last time out.
  • Detroit: 104 wRC+ season-long, with better recent form.
  • At 1.518 (65.88% break-even), OPTIMUS II priced Tigers +1.5 at 72.55% — fair odds ~1.38.

Risks

What could go wrong

The main risk was Seattle’s bullpen edge and a strong Miller outing turning a close matchup in the Mariners’ favour late — the kind of two-run finish the +1.5 cushion is designed to avoid.

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