Zulgad’s four-and-out: Brian O’Neill takes an important step, T.J. Hockenson’s partial participation, and why free agent visits end without signings

As the Minnesota Vikings enter an important stretch in training camp, Judd Zulgad offers updates on Brian O’Neill, T.J. Hockenson and more.

The Vikings began a busy two-week stretch on Sunday in which they will play host to the Tennessee Titans and Arizona Cardinals for joint practices and then preseason games.

Other than an exhibition loss on Thursday in Seattle, the Vikings have spent training camp competing against themselves since it opened in late July.

The Titans’ presence on Wednesday and Thursday at TCO Performance Center will change that and will present an opportunity for the teams to go against each other in a more controlled environment than the preseason game between the clubs on Saturday at U.S. Bank Stadium.

Coach Kevin O’Connell called the next two weeks, “the most important stretch of our training camp,” as his team prepares for their Sept. 10 opener against Tampa Bay.

The Vikings got some good news on Sunday as starting right tackle Brian O’Neill practiced for the first time this summer in full pads. Here’s the update on O’Neill and a few other notes ahead of the Titans’ arrival in Eagan.