Rafael Nadal of Spain reacts during the men's singles second round match against Mackenzie McDonald of the United States at French Open tennis tournament 2020 at Roland Garros, in Paris, France on Sept. 30, 2020. (Xinhua/Gao Jing)
Alba dominated the first quarter, thanks to points by Simone Fontecchio and Marcus Ericksson, on the way to a 29-19 lead at the end of the quarter.
That performance has put Athletic coach Gaizka Garitano under pressure and both he and Machin need wins to assure they are still in their jobs after the international break.
Luo's compatriots Zhao Xintong, Xiao Guodong and Zhou Yuelong all have progressed into the second stage earlier.
Guardiola fielded new signing Nathan Ake and youngster Eric Garcia, neither of whom is six feet tall.
Curcurella doubled Getafe's lead with a powerful shot into the corner of the net in the 38th minute and Angel rounded off the scoring with his second of the night after Betis lost possession in midfield.
Also on Tuesday, men's singles seventh seed Matteo Berrettini of Italy cruised to a 6-3, 6-1, 6-3 victory over Canadian Vasek Pospisil.
Yan established an advantage from the very beginning, leading runner-up Yu Zongda, also from Hubei, by nearly two seconds in the first 50 meters. Huang Chaosheng from Hunan finished third.
Villarreal travels after an easy 3-1 win at home to Alaves and with strikers Paco Alcacer and Gerard Moreno both in excellent form after netting six goals between them in Villarreal's first four games of the season.
Yao was the title favorite but the 30-year-old failed to clear the bar at 5.30m, although he passed the height of 5.15m in his first attempt.
Pliskova wasted eight set points in the opener but recovered quickly in the following two sets, serving out the contest on Court Philippe-Chatrier after two hours and 15 minutes.