According to ESPN's Kevin Seifert, quarterback is, in fact, Minnesota's biggest position battle:The Vikings have committed to an open, fairly-adjudicated competition between newcomer Kyler Murray and incumbent J.J. McCarthy. "I know both guys will feel like they've got an opportunity to compete," coach Kevin O'Connell said. -- Kevin SeifertYou can argue that this is the biggest decision that Kevin O'Connell will have to make since taking over in Minnesota. This roster has the pieces to push for a playoff spot, but choosing the wrong starter could cost them that coveted spot. AdvertisementAdvertisement AdvertisementThis article originally appeared on Vikings Wire: Which position battle does ESPN have its eyes on with the Vikings?