SPOTTER.
You have to decide based on everything. Here's everything — graded.
Game View
first pitch 1:20 PM CDT

Pittsburgh Pirates @ Chicago Cubs

Fri 9/11 · 1:20 PM CDT · forecast weather in the grade · ump: confirmed
FIRST 5 INNINGS · OVER 4.5
C
C cards like this have won 51% over · market 50%
TOTAL
no lean
model 47% over · market 49%
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
Team strength & form leans over41%
Umpire's strike zone has run narrower than the league this past year — fewer called strikes27%
The home team above league average in home runs, last 30 games18%
Backup catcher startingagainst the over6%
Day gameagainst the over1%
WHAT WE COULDN'T SEEpriced into our number — not evidence about this game
No prior major-league start on record for the away starter — graded on league-typical assumptionsagainst the over8%
Market: First-5-innings Over 4.5 at -108 (pinnacle, quoted 12:00 PM CDT) · model expects ~5.4 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 50.9% of 1,034 out-of-sample grades (2021-2024), -0.5 points over break-even at the close. Not a betting-plan cell.
Frozen no lean at 8:15 AM CDT · the market moved away from it · final grade C.
anchor First-5 Over 4.5 -108 → closed -106 · away
SITUATIONAL CONDITIONSdetected for this game · not a grade input — anything that carries weight appears in THE PICTURE
Day game after a night gameCatcher rest spotHigh-scoring umpire
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. F5 grades ride a shorter history (2023-2025).
Raw grade details (all passes)
[
 {
  "market": "f5_total",
  "pass_kind": "first",
  "graded_utc": "2026-09-11T13:15:30Z",
  "rung": "l1",
  "fit_id": 121,
  "feature_version": 5,
  "model_p": 0.5279478322221004,
  "p_shipped": 0.48392131292402524,
  "model_mu": 4.320705716454841,
  "market_p": 0.49610389610389616,
  "divergence": 0.03184393611820424,
  "band": null,
  "anchor_line": 4.5,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-11T13:15:30Z",
  "lineup_known": 0,
  "ump_state": "unknown",
  "weather_kind": "forecast",
  "result": "won",
  "factors": [
   {
    "family": "strength",
    "phrase": "Team strength & form leans over",
    "share": 0.3724,
    "contribution": 0.17334,
    "kind": "driver",
    "features": [
     "a_rs30",
     "a_ra30",
     "h_ra30"
    ]
   },
   {
    "family": "ump",
    "phrase": "No recent umpire zone reading against the league \u2014 graded on league-typical assumptions",
    "share": 0.2767,
    "contribution": -0.12879,
    "kind": "gap",
    "features": [
     "ump_rel_miss",
     "ump_acc_rel",
     "ump_bb_dev_sd"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team above league average in home runs, last 30 games",
    "share": 0.1611,
    "contribution": 0.07498,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "h_off_xbh30",
     "a_off_xbh30"
    ]
   },
   {
    "family": "battery",
    "phrase": "No record of strikes gained behind the plate for the away team \u2014 graded on league-typical assumptions",
    "share": 0.1148,
    "contribution": 0.05344,
    "kind": "gap",
    "features": [
     "a_framing_miss",
     "h_cat_framing_prior",
     "h_cs30"
    ]
   },
   {
    "family": "starters",
    "phrase": "No prior major-league start on record for the away starter \u2014 graded on league-typical assumptions",
    "share": 0.0705,
    "contribution": -0.03283,
    "kind": "gap",
    "features": [
     "a_sp_days_rest_miss",
     "h_sp_tto_decay",
     "a_sp_mix_drift"
    ]
   },
   {
    "family": "park",
    "phrase": "Day game",
    "share": 0.0044,
    "contribution": -0.00207,
    "kind": "driver",
    "features": [
     "day_game",
     "roof_open",
     "wind_out_comp"
    ]
   }
  ]
 },
 {
  "market": "f5_total",
  "pass_kind": "final",
  "graded_utc": "2026-09-11T17:00:30Z",
  "rung": "l1",
  "fit_id": 121,
  "feature_version": 5,
  "model_p": 0.5676063749163908,
  "p_shipped": 0.5057153795788811,
  "model_mu": 5.41647439203062,
  "market_p": 0.5,
  "divergence": 0.06760637491639077,
  "band": "C",
  "anchor_line": 4.5,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-11T17:00:30Z",
  "lineup_known": 1,
  "ump_state": "confirmed",
  "weather_kind": "forecast",
  "result": "won",
  "factors": [
   {
    "family": "strength",
    "phrase": "Team strength & form leans over",
    "share": 0.4106,
    "contribution": 0.17334,
    "kind": "driver",
    "features": [
     "a_rs30",
     "a_ra30",
     "h_ra30"
    ]
   },
   {
    "family": "ump",
    "phrase": "Umpire's strike zone has run narrower than the league this past year \u2014 fewer called strikes",
    "share": 0.2654,
    "contribution": 0.11205,
    "kind": "driver",
    "features": [
     "ump_width_rel",
     "ump_bb_dev_sd",
     "ump_edge_cs_rel"
    ]
   },
   {
    "family": "offense",
    "phrase": "The home team above league average in home runs, last 30 games",
    "share": 0.1772,
    "contribution": 0.07481,
    "kind": "driver",
    "features": [
     "h_off_hr30",
     "h_off_xbh30",
     "a_off_xbh30"
    ]
   },
   {
    "family": "starters",
    "phrase": "No prior major-league start on record for the away starter \u2014 graded on league-typical assumptions",
    "share": 0.0778,
    "contribution": -0.03283,
    "kind": "gap",
    "features": [
     "a_sp_days_rest_miss",
     "h_sp_tto_decay",
     "a_sp_mix_drift"
    ]
   },
   {
    "family": "battery",
    "phrase": "Backup catcher starting",
    "share": 0.0616,
    "contribution": -0.026,
    "kind": "driver",
    "features": [
     "a_backup_catcher",
     "h_cat_framing_prior",
     "h_cs30"
    ]
   },
   {
    "family": "park",
    "phrase": "Day game",
    "share": 0.0074,
    "contribution": -0.00311,
    "kind": "driver",
    "features": [
     "day_game",
     "roof_open",
     "wind_out_comp"
    ]
   }
  ]
 },
 {
  "market": "total",
  "pass_kind": "first",
  "graded_utc": "2026-09-11T13:15:30Z",
  "rung": "l1",
  "fit_id": 117,
  "feature_version": 5,
  "model_p": 0.4697180227792439,
  "p_shipped": 0.5064117098208164,
  "model_mu": 7.715734871594578,
  "market_p": 0.5116279069767442,
  "divergence": -0.0419098841975003,
  "band": null,
  "anchor_line": 8.0,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-11T13:15:30Z",
  "lineup_known": 0,
  "ump_state": "unknown",
  "weather_kind": "forecast",
  "result": "lost",
  "factors": [
   {
    "family": "starters",
    "phrase": "The away starter likely goes only an inning or two \u2014 relievers cover most of the game. Priced in, and it went too far \u2014 counts toward the under",
    "share": 0.2536,
    "contribution": -0.20154,
    "kind": "driver",
    "features": [
     "a_sp_opener",
     "a_sp_debut",
     "a_sp_starts_c10"
    ]
   },
   {
    "family": "strength",
    "phrase": "The away team allowing 3.6 runs a game, last 30 \u2014 below league average. Priced in, and it went too far",
    "share": 0.2344,
    "contribution": 0.18628,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "situational",
    "phrase": "Schedule spot: day game after a night game for the away team",
    "share": 0.2022,
    "contribution": -0.16071,
    "kind": "driver",
    "features": [
     "a_rest0",
     "a_dan",
     "a_miles7d_k"
    ]
   },
   {
    "family": "bullpen",
    "phrase": "The away team's bullpen worked hard the last three days",
    "share": 0.1669,
    "contribution": 0.1326,
    "kind": "driver",
    "features": [
     "a_bp_b2b",
     "a_bp_apps_3d",
     "h_bp_pitches_3d"
    ]
   },
   {
    "family": "defense",
    "phrase": "Defense leans under \u2014 mostly the away team",
    "share": 0.1429,
    "contribution": -0.1136,
    "kind": "driver",
    "features": [
     "a_err30",
     "a_unearned30",
     "h_err30"
    ]
   }
  ]
 },
 {
  "market": "total",
  "pass_kind": "final",
  "graded_utc": "2026-09-11T17:00:30Z",
  "rung": "l1",
  "fit_id": 117,
  "feature_version": 5,
  "model_p": 0.4963546504335753,
  "p_shipped": 0.4738422808137004,
  "model_mu": 9.354047601988986,
  "market_p": 0.4910025706940874,
  "divergence": 0.005352079739487869,
  "band": null,
  "anchor_line": 8.5,
  "anchor_book": "pinnacle",
  "anchor_fetched_utc": "2026-09-11T17:00:30Z",
  "lineup_known": 1,
  "ump_state": "confirmed",
  "weather_kind": "forecast",
  "result": "won",
  "factors": [
   {
    "family": "starters",
    "phrase": "The away starter likely goes only an inning or two \u2014 relievers cover most of the game. Priced in, and it went too far",
    "share": 0.2454,
    "contribution": -0.20154,
    "kind": "driver",
    "features": [
     "a_sp_opener",
     "a_sp_debut",
     "a_sp_starts_c10"
    ]
   },
   {
    "family": "strength",
    "phrase": "The away team allowing 3.6 runs a game, last 30 \u2014 below league average. Priced in, and it went too far \u2014 counts toward the over",
    "share": 0.2269,
    "contribution": 0.18628,
    "kind": "driver",
    "features": [
     "a_ra30",
     "h_ra30",
     "a_rs30"
    ]
   },
   {
    "family": "situational",
    "phrase": "Schedule spot: day game after a night game for the away team",
    "share": 0.1957,
    "contribution": -0.16071,
    "kind": "driver",
    "features": [
     "a_rest0",
     "a_dan",
     "a_miles7d_k"
    ]
   },
   {
    "family": "ump",
    "phrase": "Umpire gives hitters the borderline call more than most",
    "share": 0.1705,
    "contribution": 0.14002,
    "kind": "driver",
    "features": [
     "ump_edge_cs_asof",
     "ump_bb_dev_sd",
     "ump_acc_asof"
    ]
   },
   {
    "family": "bullpen",
    "phrase": "The away team's bullpen worked hard the last three days",
    "share": 0.1615,
    "contribution": 0.1326,
    "kind": "driver",
    "features": [
     "a_bp_b2b",
     "a_bp_apps_3d",
     "h_bp_pitches_3d"
    ]
   }
  ]
 }
]