Context: The 2017 U.S. Open Championship was the 117th U.S. Open, held June 15 -- 18, 2017 at Erin Hills in Erin, Wisconsin, northwest of Milwaukee. The event was won by Brooks Koepka, who claimed his first major after finishing with a final score of 16 under par. This score matched the lowest score ever attained at the tournament, a record set in 2011 by Rory McIlroy.\n\nQuestion: who won this year's us open golf? OK. Let's think. My stream of consciousness:
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The relevant information to answer the above question is: The event was won by Brooks Koepka, who claimed his first major after finishing with a final score of 16 under par. The answer is Brooks Koepka.
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