"USGA" is a registered trademark of the United States Golf Association.
While oobgolf handicaps are compliant with USGA formulas, they cannot be used in USGA tournaments or USGA Sanctioned events.
How are 9-hole scores handled?
9-hole scores must be paired together before they are calculated into handicap. The scores are paired chronologically. This means that you will only see your handicap adjusted every other 9-hole score entered.
What determines how many scores are used?
The number of full scores entered determines how many scores are used to calculate handicap. Note that 2 9-hole scores equals a full round. Below is a chart of the numbers: