German weightlifter Matthias Steiner kisses a picture of his late wife Susann on the gold medal podium, choking back tears over the promise he made to her that he would keep their Olympic dream.

• 乌塞恩？博尔特打破男子100米世界纪录。博尔特之前已经是该项目的世界纪录保持者，在鸟巢数万观众的见证下，他跑出了9秒69的成绩。