He is also one of the greatest basketball players to have run on the court
参加过比赛的篮球运动员里,他也是表现最好的人之一.
句子简化后是
he is one.他是一个人,主谓宾齐全.
其他成分,
of the greatest basketball player是one的定语； to have run on the court是player的定语