---
id: 8ce81bc9-3bce-44a9-89e8-c01e54e6df7a
type: fix
title: "Fix: Scorebug win probability orientation — C8=winning team, D8=percentage"
tags: [major-domo, scorebug, win-probability, google-sheets, fix, data-orientation]
importance: 0.7
confidence: 0.8
created: "2026-02-20T20:30:15.225730+00:00"
updated: "2026-02-20T20:30:15.225730+00:00"
---

# Scorebug Win Probability Orientation Bug

## Project
major-domo / discord-app-v2

## File
`services/scorebug_service.py`

## Google Sheets Layout
The scorecard outputs:
- **C8** (`all_data[6][1]`): winning team's abbreviation
- **D8**: that team's win probability percentage

## Problem
Code was treating D8 as always the **home team's** win%, regardless of which team C8 named. This produced an inverted win probability whenever the away team was winning.

## Fix
Read C8 and compare to the home team abbreviation (from `game_state[4][1]`).

```python
winning_team_abbr = all_data[6][1]  # C8
home_team_abbr = game_state[4][1]

win_percentage = float(d8_value)
if winning_team_abbr != home_team_abbr:
    win_percentage = 100 - win_percentage  # flip to home team's perspective
```

`ScorebugData.win_percentage` is always stored from the **home team's perspective**.

## Key Takeaway
When consuming a spreadsheet that outputs "winning team + that team's probability," always check orientation and normalize to a consistent perspective before storing.