I usually just pick a bunch of events, and watch as many as I can, but obviously I don't have time for everything
Here's what I'm thinking of watching:
USA Swim Trials (June 27- July 1)
CEV King & Queen Of The Court (June 27- July 1)
FIVB Men's VNL (June 23-July 23)
FIVB Women's VNL (June 26- July 16)
Sette Colli Trophy (June 23-25)
BPT Futures Ios Island/Messina/Helsinki (June 21-24, June 29- July 2)
Krakow Malopolska 2023 EG (June 21- July 2)
U-23 Africa Cup Of Nations (June 24- July 8)
UEFA European Under -21 Championship (June 21- July 8)
WSL Vivo Rio Pro (June 23- July 1)
WST Street Skateboarding Rome (June 18-25)
IJF Mongolia Grand Slam (June 23-25)
World Triathlon Championship Series Montreal (June 24)
WA Continental Gold Tour USATF New York Grand Prix (June 24)
FIBA 3x3 Basketball Women's Series Orleans/Poitier/Marseille (June 23-24, June 27-28, June 29-30)
Diamond League Lausanne (June 29)
Diamond League Stockholm (July 2)
ATP Halle Open/ATP Queens Club Championship/WTA Berlin Open/WTA Birmingham Open (June 19-25)
WTA/ATP Eastbourne International (June 26- July 1)
WTA Bad Homburg Open (June 25- July 1)
ATP Mallorca Championships (June 25- July 1)
WA Continental Gold Tour Ostrava (June 27)
UCI BMX Racing World Cup Papendal Rounds 3/4 (June 24-25)
BWF Yonex Taipei Open (June 20-25)
Edit: Forgot about Men's Lacrosse World Championships (June 21- July 4)
Sadly, I won't be able to watch all of them, and will have to choose some events to drop from my schedule.