BUG: Duplicate player_id values in load_ff_opportunity()

[nolanpopp]

The load_ff_opportunity() function returns duplicate records with the same (game_id, player_id) combination but different player names.

import nflreadpy as nfl
import pandas as pd 

# Load FF opportunity data for 2013 season
df = nfl.load_ff_opportunity([2013]).to_pandas()

# Filter out rows where player_id or full_name is None/null
df_valid = df[
    df['player_id'].notna() & 
    df['full_name'].notna() &
    (df['player_id'] != '') &
    (df['full_name'] != '')
].copy()

# Check for duplicates on (game_id, player_id)
duplicates = df_valid[df_valid.duplicated(subset=['game_id', 'player_id'], keep=False)]
duplicates_sorted = duplicates.sort_values(['game_id', 'player_id'])

# Display the problematic records
print("Duplicate (game_id, player_id) combinations found:")
print(duplicates_sorted[['game_id', 'player_id', 'full_name', 'position']].to_string())

# Count total duplicates
dup_count = len(duplicates_sorted) // 2  # Divide by 2 since each pair appears twice
print(f"\nTotal duplicate pairs: {dup_count}")