It’s over, however, for Diego Schwartzman …
Seeded No. 4 in the tournament, Stefanos Tsitsipas made a strong impression against Albert Ramos (6-2, 6-1, 6-1) on Monday in the 1st round of the US Open.
It was more difficult, however, for Alexander Zverev (No.5), who left a set underway against former tournament finalist Kevin Anderson (7-6 , 5-7, 6-3, 7-5).
The first big seed to drop is Diego Schwartzman (No.9), who led two zero sets before collapsing against Cameron Norrie (3-6, 4-6, 6-2, 6-1, 7- 5).
US Open: The men’s table
“Nightmare” in the bubble at the US Open