For golf, the initial schedule is received on a Tuesday (2 days before the tournament starts) which will contain the the tee times/groups for rounds 1 and 2. The tee times/groups for rounds 3 and 4 will be released once play for day 2 and 3 are complete. We recommend that you pull the schedule endpoint every Tuesday for the upcoming tournament every minute and after player has finished post round 2 and 3.