Follow our daily updates from Cardinals training camp, including intel on the QBs, tight position battles and potential breakouts.

The Arizona Cardinals are a week into training camp and already, some trends are emerging. Among them: Marvin Harrison Jr.'s potential emergence.

The Arizona Cardinals have a number of notable position battles as they have begun training camp. Some battles are for starting jobs, while others are for key reserve spots. A pair of positions believed to have key battles — right guard and "Mike" linebacker — seem to be set with new starters. Others, though, have intrigue.