Details: "Get a one-time $10 statement credit by using your synced Card to make a single purchase of $20+ onsite at the US Open from 8/27/12 - 9/9/12."
Offer Terms: Enrollment limited. Limit 1 per Card across all American Express offer platforms. Statement credits are generally issued within 3-5 business days after your qualifying purchase, but may take up to 2 billing periods to post to your account. Statement credit may be reversed if qualifying purchase is returned/cancelled. If American Express does not receive information that identifies a transaction as having occurred at this merchant, the transaction will not be eligible for the offer.