Simplify the following text for a Grade 6 native English-speaking person.
Original: Ryuta Sasaki ( born 7 February 1988 in Kashima , Ibaraki , Japan ) is a Japanese footballer who plays for Japanese club Kashima Antlers .
Simplified: Ryuta Sasaki ( born 7 February 1988 ) is a Japanese football player . He plays for Kashima Antlers .