Alexander Blockx vs Marco Trungelliti — R64 — US Open

Seven double faults and a 51 percent first-serve rate did nothing to the hold column: Blockx was broken once in 17 service games and struck 17 aces to five. Trungelliti made it a contest in the third with 18 winners, his best stretch of the afternoon. He gave the fourth back with 10 unforced errors, broken in game 4 for 3-1 and again in game 6 for 5-1; the Argentine leaves with 46 errors against 33 winners. Two hours and 40 minutes on, the Belgian draws Cobolli, the No. 6 seed who beat him in Cincinnati last month.