The fight took place on the night of March 4-5 in Las Vegas (USA) and ended with a rear naked choke in the fourth round.
Thus, Grasso became the owner of the flyweight title.
Shevchenko has 22 wins in 26 fights in MMA.
The Mexican has 16 wins in 19 fights.
Earlier it was reported that Kazakh MMA fighter Shavkat Rakhmonov defeated American Jeff Neal by choke at UFC 285.