Interesting first day.
Tsitsipas, Zverev and Monfils gone from the men.
Osaka, Venus, Sabalenka, Garcia out for the women.
I noted that the Tsitsipas/Fabbiano and Zverev/Vesely matches were very tough 1st round matches for the 6 and 7 seeds and possible upsets.
Thiem/Querrey is the only real tough first round match I saw depending on which Querrey shows up