The Latest: Vinci, woman who beat Williams in '15, wins
NEW YORK (AP) The Latest on the U.S. Open (all times local):
The woman who stunned Serena Williams at last year's U.S. Open en route to the final, Roberta Vinci of Italy, won the first match in the tournament's refurbished Arthur Ashe Stadium.
Vinci, who is seeded No. 7, overcame some second-set jitters to beat 46th-ranked Anna-Lena Friedsam of Germany 6-2, 6-4 on Monday.
In the 2015 semifinals at Flushing Meadows, Vinci - unseeded and ranked 43rd at the time - upset Williams, ending the American's bid for tennis' first calendar-year Grand Slam in 27 years. That put Vinci into her first major final, where she lost to another Italian, childhood friend Flavia Pennetta.
The temperature hit 90 degrees Monday, but the new retractable roof atop Ashe provided some shade for spectators - and, on one side of the court, players.
Play has started at the 2016 U.S. Open under sunny skies with no rain in the forecast for days, which could delay the first official use of the new retractable roof on Arthur Ashe Stadium.
The $150 million roof, which can close in about seven minutes, is to be used, according to tournament officials, only ''in the event of inclement weather or the strong possibility of inclement weather.''
Neither is expected in the next few days, with forecasts calling for clear skies and highs in the 80s.
The roof is still set to make its debut, of sorts, at Monday night's opening ceremony. The U.S. Tennis Association plans to shut the roof after the day session and open it for effect while Phil Collins performs ''In the Air Tonight.''