The Quarterback promotion has nothing to do with American Football in case you were wondering. The "Quarter" relates to a 25% cashback on your weekly losses. Here is how it works.
You must place a minimum of 5 bets during the Week (on different selections), and four of these bets must be at least half the value of your highest placed wager.
Example: if your largest bet for the week is £/€20, you will need to place at least four additional bets of £/€10 or more (on different selections) during the week.
You must place these bets before 23:59 on Sunday.
If at the end of the week your account has losses overall and losses in the given week and you meet the promotion terms and conditions you will get 25% back of your weekly losses as a free bet on Monday.