Do you have a Hawk-Eye?

Do you have a Hawk-Eye? Hawk-Eye is the computer based instant replay system used on both the ATP and WTA Tours. Players can use the Hawk-Eye replay to spot if their shots were inside the line, outside the line, or right on the line. Do you have what it takes to use your Hawk-Eye to spot the 10 differences in these two pictures of Ace and his friends? Circle where you spot the changes, and check on the last page to see if you found all 10!

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