If you google “The History of Sports, From Ancient Times to Modern Day” you will see confirmed that:
“Ancient Greece introduced formal sports, with the first Olympic Games in 776 BC, that included sports such as human and chariot races, wrestling, jumping, disk and javelin throwing, and more.”
This Greek Culture infiltrated Bnei Yisroel and many became MisYavnim. The CHashmonoyim fought this Greek Culture, but some Yidden nebech retained it. Those that continue in this Greek “mesorah” today, are following in the derech of the MisYavnim.