【基本案情】原告甲与被告乙(均为17岁)系被告丙中学高三年级的学生,二者系同学关系。2016年5月19日下午课间时间,原告甲在学校篮球场打球,后被告乙也来打球。甲与乙进行一对一篮球运动,当时只有一名同学丁在场。第三回合时,原告甲持球进攻,被告乙防守,甲在跳起投篮时摔倒受伤,其伤情被诊断为左膝前交叉韧带损伤、膝内侧半月板损伤。原告甲主张系被告乙推了甲导致甲摔倒受伤,被告乙对此不予认可。被告乙申 【Basic facts】 The plaintiff A and the defendant B (both 17 years old) were defendants in the third year of high school students in Grade C, both students relationship. On the afternoon of May 19, 2016, during the recess time, the plaintiff A played basketball at the school basketball court and the defendant B played the ball. A and B for one-on-one basketball, when only one classmate Ding was present. On the third turn, the defendant, B, defends against the ball and defends against the defendant. A falls and wounded when he jumps and shoots. His injury is diagnosed as anterior cruciate ligament injury in the left knee and meniscal injury in the medial knee. The defendant B argued that the defendant B pushed A down and injured him. The defendant B did not approve this. Defendant B Shen