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Italian men at US Open QFs

1⃣3⃣3⃣🇮🇹 male players played in singles at Grand Slam since 1⃣8⃣7⃣7⃣& Matteo Berrettini is 
-1⃣st who reached a QF US Open Tennis Championships on hard court,
-1⃣st who reached a QF US Open Tennis Championships in his 2nd year, 
-2⃣nd who reached QF US Open Tennis Championships in Open-era (Corrado Barazzutti) and 
-the youngest who reached a QF US Open Tennis Championships !