The Wikipedia snippet below is not backed by a reliable source. Can you find one?
Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!
In page Miyamoto Musashi:
"According to Go Rin No Sho, Musashi testified that his first duel occurred when he was still 13 years old, against a swordsman named Arima Kihei who practiced Kashima Shintō-ryū martial arts that were created by Tsukahara Bokuden; Musashi was victorious. The second duel happened when Musashi was 16 years old, when he won another victory against a swordsman named Tadashima Akiyama, a native of Tajima Province. His third duel came when he was aged 21, in Kyoto, where he defeated several students of a famous sword fighting school.[citation needed]