Olympic badminton champion Marin to miss Tokyo Games
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The 27-year-old will undergo surgery in the coming days after suffering the injury during a training session last week.
"This is another blow that I have to deal with, but I will certainly be back," she wrote on social media.
The three-time world champion also ruptured the ACL in her right knee in 2019 and missed that year's world championships.
She beat India's PV Sindhu in the 2016 Olympic final in Rio.