Expected Umpire CSV format: umpireId,name,phone (e.g., umpire_alice,Alice Smith,555-000-1111)
Expected Game CSV format: date (YYYY-MM-DD),time (HH:MM),league,division,address,field,homeTeam,contactNumber
IMPORTANT: Enclose fields containing commas or special characters in double quotes ("...").
Example: 2026-01-16,17:00,SCBA,9/10 Silver,"2665 Harrisburg Rd. NE, Canton Ohio 44705","Borrs Field #1",Hill,555-123-4567