Jim Harbaugh went into the medical tent then to the locker room in the first quarter Sunday to get checked out for an irregular heartbeat.

The injury could be a season-ending one for the star - and could upend the playoff picture in the NFL dramatically.

By now, Kaepernick has been out of the NFL longer than he played in the league. What team is going to take a chance on him?

"He’s considering it. He was out of the country. He said he was going to get back to me. We haven’t reconnected since then."

"I have raised my family on that lesson. I have preached that lesson to the teams that I have coached," Harbaugh said.

The news comes a week after Harbaugh took a pro-life stand at the annual March for Life event in Washington D.C.

"So for first time in more than a decade, I don't have access to a live NFL game," one disgruntled fan lamented.

“We are proud to work with our partners at the NFL to present this first-of-its kind experience,” NBC Sports President Rick Cordella said.

A completely legal tackling form has been at the center of a raging football controversy. Another injury on Sunday won't quiet this debate.

The former Super Bowl MVP said he would still be playing football if it weren't for the injury he suffered in 2005.