David Johnson's knee is back to 100 percent

TEMPE, Ariz. -- It's been almost 10 weeks since Arizona Cardinals running back David Johnson sprained his MCL in the season finale against the Los Angeles Rams, but the centerpiece of Arizona's offense is back to 100 percent.

"My wheel's good," Johnson said Saturday in between sessions of the Kurt Warner Ultimate Football Challenge, a flag-football tournament that benefits Warner's charity. "I'm good to go. Already back training full throttle, squatting, everything."

Johnson is about two weeks beyond the 6-to-8 week recovery period that coach Bruce Arians estimated on Jan. 2, a day after Johnson's injury. On Feb. 8 -- less than six weeks after his injury -- Johnson posted a video of him jumping out of a pool to his Instagram account. He said the video wasn't warmly received.

"I got a pretty harsh reminder not to do stuff like that and get ready for the season ... be smart going into the season," Johnson said.

Johnson set an NFL record last season with 15 straight games of at least 100 yards from scrimmage in one season. He finished last season with 1,239 rushing yards and came within 121 receiving yards of being the third player in NFL history to have 1,000 rushing and 1,000 receiving yards in the same season.

On Saturday, as the quarterback for his team at Warner's event, Johnson appeared to be running fluid and without any issues.