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SEA 4 · LAA 6 — how the graded markets landed
FINAL

Seattle Mariners @ Los Angeles Angels

Tue 9/15 · 8:38 PM CDT · forecast weather in the grade · ump: confirmed
TOTAL · UNDER 7.5 RUNS
C
C cards like this have won 52% under · market 50%
FIRST 5 INNINGS
no lean
model 52% under · market 52%
the letter is how far we sit from the market, not how sure we are
THE PICTURE — what's driving the 7-point gapsized against each other · measured against the line — a stat the market already prices can point opposite its usual read
The away team allowing 6.2 runs a game, last 30 — above league average. Priced in, and it went too far — counts toward the under47%
The home team below league average in home runs, last 30 games19%
Heavy travel this week for the home teamagainst the under15%
Starting pitchers leans over — mostly the away teamagainst the under11%
Defense leans under — mostly the away team7%
Market: Under 7.5 runs at -105 (pinnacle, quoted 7:30 PM CDT) · model expects ~7.7 runs · divergence 7 points — band C. lean, not edge-demonstrated C-band cutoffs fitted on OOF 2021-2024; the live record starts with this log. C cards in this market have won 52.2% of 2,317 out-of-sample grades (2021-2024), +1.0 points over break-even at the close. Not a betting-plan cell.
FIRST 5Frozen C at 8:15 AM CDT · the market came toward our number · final grade no lean.
TOTALFrozen C at 8:15 AM CDT · the number held.
anchor Under 7.5 runs -105 → closed -111 · our way
SITUATIONAL CONDITIONSdetected for this game · not a grade input — anything that carries weight appears in THE PICTURE
September call-up lineupStarter threw 105+ pitches last start
Honest row: grades cap at the band — extreme disagreement is as often our error as the market's. Moneyline gets no grade because our model hasn't beaten that market and says so. Graded against the line at grade time; the model was validated against closing lines. Weather from forecast; regrade if conditions flip.
Raw grade details (all passes)
[
 {
  "market": "f5_total",
  "pass_kind": "first",
  "graded_utc": "2026-09-14T13:15:49Z",
  "rung": "l1",
  "fit_id": 121,
  "feature_version": 5,
  "model_p": 0.3909174362919849,
  "p_shipped": 0.45469897044538987,
  "model_mu": 3.7711573450634877,
  "market_p": 0.4739583333333334,
  "divergence": -0.08304089704134854,
  "band": "C",
  "anchor_line": 4.0,
  "anchor_book": "betonlineag",
  "anchor_fetched_utc": "2026-09-14T13:15:49Z",
  "lineup_known": 0,
  "ump_state": "unknown",
  "weather_kind": "forecast",
  "result": "lost",
  "factors": [
   {
    "family": "strength",
    "phrase": "The away team allowing 6.2 runs a game, last 30 \u2014 above league average. Priced in, and it went too far \u2014 counts toward the under",
    "share": 0.3128,
    "contribution": -0.24119,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "ump",
    "phrase": "No recent umpire zone reading against the league \u2014 graded on league-typical assumptions",
    "share": 0.167,
    "contribution": -0.12879,
    "kind": "gap",
    "features": [
     "ump_rel_miss",
     "ump_acc_rel",
     "ump_bb_dev_sd"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team below league average in home runs, last 30 games",
    "share": 0.1669,
    "contribution": -0.1287,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "h_off_xbh30",
     "h_off_k30"
    ]
   },
   {
    "family": "park",
    "phrase": "Wind blowing out, ~7 mph net",
    "share": 0.1663,
    "contribution": 0.12826,
    "kind": "driver",
    "features": [
     "roof_open",
     "wind_out_comp",
     "alt_kft"
    ]
   },
   {
    "family": "starters",
    "phrase": "The home starter strikes out 27.6% of batters, adjusted \u2014 a higher strikeout rate than average",
    "share": 0.1475,
    "contribution": -0.11378,
    "kind": "driver",
    "features": [
     "h_sp_k_pct_shr",
     "h_sp_pitches_30d",
     "a_sp_mix_drift"
    ]
   },
   {
    "family": "battery",
    "phrase": "The home team's catcher gains extra strikes behind the plate",
    "share": 0.0395,
    "contribution": -0.03045,
    "kind": "driver",
    "features": [
     "h_cat_framing_prior",
     "h_cs30",
     "a_cs30"
    ]
   }
  ]
 },
 {
  "market": "f5_total",
  "pass_kind": "final",
  "graded_utc": "2026-09-15T00:30:18Z",
  "rung": "l1",
  "fit_id": 121,
  "feature_version": 5,
  "model_p": 0.4504084100533765,
  "p_shipped": 0.47669538365614,
  "model_mu": 4.625004346993529,
  "market_p": 0.4793814432989691,
  "divergence": -0.028973033245592583,
  "band": null,
  "anchor_line": 4.0,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-15T00:30:18Z",
  "lineup_known": 1,
  "ump_state": "confirmed",
  "weather_kind": "forecast",
  "result": "lost",
  "factors": [
   {
    "family": "strength",
    "phrase": "The away team allowing 6.2 runs a game, last 30 \u2014 above league average. Priced in, and it went too far \u2014 counts toward the under",
    "share": 0.4134,
    "contribution": -0.24119,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "park",
    "phrase": "Wind blowing out, ~6 mph net",
    "share": 0.2104,
    "contribution": 0.12278,
    "kind": "driver",
    "features": [
     "roof_open",
     "wind_out_comp",
     "temp_out"
    ]
   },
   {
    "family": "starters",
    "phrase": "The home starter strikes out 27.6% of batters, adjusted \u2014 a higher strikeout rate than average",
    "share": 0.195,
    "contribution": -0.11378,
    "kind": "driver",
    "features": [
     "h_sp_k_pct_shr",
     "h_sp_pitches_30d",
     "a_sp_mix_drift"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team below league average in home runs, last 30 games",
    "share": 0.1402,
    "contribution": -0.08181,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "h_off_xbh30",
     "h_platoon_share"
    ]
   },
   {
    "family": "battery",
    "phrase": "The home team's catcher loses strikes on close pitches",
    "share": 0.0409,
    "contribution": 0.02389,
    "kind": "driver",
    "features": [
     "h_cat_framing_prior",
     "h_backup_catcher",
     "h_cs30"
    ]
   }
  ]
 },
 {
  "market": "total",
  "pass_kind": "first",
  "graded_utc": "2026-09-14T13:15:49Z",
  "rung": "l1",
  "fit_id": 117,
  "feature_version": 5,
  "model_p": 0.4164413028611805,
  "p_shipped": 0.49347943949591533,
  "model_mu": 6.905447707338136,
  "market_p": 0.4895287958115184,
  "divergence": -0.07308749295033795,
  "band": "C",
  "anchor_line": 7.5,
  "anchor_book": "betonlineag",
  "anchor_fetched_utc": "2026-09-14T13:15:49Z",
  "lineup_known": 0,
  "ump_state": "unknown",
  "weather_kind": "forecast",
  "result": "lost",
  "factors": [
   {
    "family": "strength",
    "phrase": "The away team allowing 6.2 runs a game, last 30 \u2014 above league average. Priced in, and it went too far \u2014 counts toward the under",
    "share": 0.4155,
    "contribution": -0.31287,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team below league average in home runs, last 30 games",
    "share": 0.2085,
    "contribution": -0.15698,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "a_off_xbh30",
     "a_off_bb30"
    ]
   },
   {
    "family": "situational",
    "phrase": "Heavy travel this week for the home team",
    "share": 0.1337,
    "contribution": 0.10069,
    "kind": "driver",
    "features": [
     "h_rest0",
     "a_rest0",
     "h_miles7d_k"
    ]
   },
   {
    "family": "starters",
    "phrase": "Starting pitchers leans over \u2014 mostly the away team",
    "share": 0.101,
    "contribution": 0.07603,
    "kind": "driver",
    "features": [
     "h_sp_k_pct_shr",
     "h_sp_starts_c10",
     "h_sp_pitches_30d"
    ]
   },
   {
    "family": "ump",
    "phrase": "No umpire zone data \u2014 graded on league-typical assumptions",
    "share": 0.0788,
    "contribution": -0.05936,
    "kind": "gap",
    "features": [
     "ump_zone_miss",
     "ump_gate_miss",
     "ump_acc_asof"
    ]
   },
   {
    "family": "defense",
    "phrase": "Defense leans under \u2014 mostly the away team",
    "share": 0.0626,
    "contribution": -0.04713,
    "kind": "driver",
    "features": [
     "a_err30",
     "a_unearned30",
     "h_err30"
    ]
   }
  ]
 },
 {
  "market": "total",
  "pass_kind": "final",
  "graded_utc": "2026-09-15T00:30:18Z",
  "rung": "l1",
  "fit_id": 117,
  "feature_version": 5,
  "model_p": 0.43530165795126063,
  "p_shipped": 0.4939264726657141,
  "model_mu": 7.749393870299232,
  "market_p": 0.502577319587629,
  "divergence": -0.06727566163636833,
  "band": "C",
  "anchor_line": 7.5,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-15T00:30:18Z",
  "lineup_known": 1,
  "ump_state": "confirmed",
  "weather_kind": "forecast",
  "result": "lost",
  "factors": [
   {
    "family": "strength",
    "phrase": "The away team allowing 6.2 runs a game, last 30 \u2014 above league average. Priced in, and it went too far \u2014 counts toward the under",
    "share": 0.4723,
    "contribution": -0.31287,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team below league average in home runs, last 30 games",
    "share": 0.1897,
    "contribution": -0.12568,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "a_off_xbh30",
     "a_off_bb30"
    ]
   },
   {
    "family": "situational",
    "phrase": "Heavy travel this week for the home team",
    "share": 0.152,
    "contribution": 0.10069,
    "kind": "driver",
    "features": [
     "h_rest0",
     "a_rest0",
     "h_miles7d_k"
    ]
   },
   {
    "family": "starters",
    "phrase": "Starting pitchers leans over \u2014 mostly the away team",
    "share": 0.1148,
    "contribution": 0.07603,
    "kind": "driver",
    "features": [
     "h_sp_k_pct_shr",
     "h_sp_starts_c10",
     "h_sp_pitches_30d"
    ]
   },
   {
    "family": "defense",
    "phrase": "Defense leans under \u2014 mostly the away team",
    "share": 0.0712,
    "contribution": -0.04713,
    "kind": "driver",
    "features": [
     "a_err30",
     "a_unearned30",
     "h_err30"
    ]
   }
  ]
 }
]