For all Tiers from Bronze to Platinum, rewards are based of the player's highest rank of the day.

In Challenger Seasons the daily reward is based on your rank at the time rewards are sent each day. Your current rank is based on your cumulative fight score in the week.

In a seasonal league, you get daily rewards as long as you've made at least one attack since the week began (Monday at 9:00 PM CT). In non-seasonal leagues, you get rewards as long as you've made an attack in the past 7 days.