Why Mitchell Robinson missed his Celtics introduction: ‘Can’t catch a break’

New Celtics big man Mitchell Robinson's brother, Zeek, was hit by a car while out for a job on Tuesday, according to the victim's grandfather, who shared the news in a Facebook post. New Celtics big man Mitchell Robinson’s brother, Zeek, was hit by a car while out for a jog Tuesday, according to the victim’s grandfather, who shared the news in a Facebook post.Robinson, who was absent from the Celtics’ press conference Tuesday introducing their new players, reshared the Facebook