Posted by Sabrina B. @gametimegirl

A confrontation between Minnesota Vikings coach Brad Childress and receiver Percy Harvin grew so heated Friday afternoon that coaches and players were forced to separate them to prevent a physical exchange, according to team sources.

The confrontation, which was first reported by The (Minneapolis) Star Tribune as a heated argument between the two, occurred during a light Friday afternoon practice, Harvin’s first of the week after suffering a sprained ankle last Sunday against the New England Patriots. Harvin was seen limping badly during the portion of practice open to reporters.

According to sources, Childress questioned Harvin’s effort during the practice. When Harvin took exception, Childress suggested Harvin submit to further testing on the ankle. The debate escalated and “was as close to physical as you can get,” according to the source.

After the two were separated, according to sources, a teammate told Harvin: “You just did what a lot of us have been wanting to say for years.”

According to sources, Harvin had further testing on the ankle Saturday morning. He remains questionable for Sunday’s game against the Arizona Cardinals.

Ed Werder is an NFL reporter for ESPN.