NEW YORK (AP) — American teenager Ryan Harrison lost 6-2, 7-5, 7-6 (6) to 27th-seeded Marin Cilic in the first round of the U.S. Open on Monday.

Harrison, who upset 15th-seeded Ivan Ljubicic last year in his debut at Flushing Meadows, had chances to serve out both the second and third sets but was broken each time. He squandered a 4-1 lead in the third-set tiebreaker.

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After he was broken to lose the second set, the 19-year-old Louisiana native — known for his fiery temper — skidded his racket across the court and received a smattering of boos from the American crowd.

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Cilic, from Croatia, won his first Grand Slam match since the Australian Open and will play either Michael Yani or Bernard Tomic in the second round.

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