Brianna Rollins wins 100m hurdles, makes first Olympic teamWhen Brianna Rollins was a skinny kid growing up in Liberty City, she used to race the neighborhood boys down her street. First one to the mailbox was the winner.Rollins was always the first one to the mailbox.There was a bunch of us on the block, Rollins said. I was the only girl. Everybody wanted to race me. Id beat them and theyd want to go again. I just loved...