The Italian defeated Steve Johnson 6-4 6-2 on Friday
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FollowEvent Recap
The South African moves into the quarterfinals in Washington.
The Spaniard won the epic match that lasted more than 3 hours.
The American moves into the round-of-16 at the Citi Open
The two-seed will face the up-and-coming Jenson Brooksby next
The American hopes to keep the momentum heading to the US Open
The world number one will face Karolina Pliskova in the final
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