By DAVE CAMPBELL EAGAN, Minn. - The challenge for Kyler Murray as a newcomer to the Minnesota Vikings learning a complex offense has an extra dimension. He has to take turns. Committed to staging a legitimate competition for their starting quarterback position, at least during this less-urgent part of the offseason, the Vikings have divided the time in drills with the first team between Murray and incumbent J.J. McCarthy. That's the way they'll ...