Shanahan felt the decision to eject the player "blew his mind."

The hit that San Francisco 49ers Dre Greenlaw laid on Los Angeles Chargers QB Justin Herbert definitely warranted a flag according to 49ers head coach Kyle Shanahan.

However, Shanahan didn’t feel as if he should’ve been ejected for the hit. There was nearly 30 seconds left in the first half, leaving the 49ers without Greenlaw for the rest of the game.

Shanahan said: “It kind of actually blew my mind. I understand the penalty. I totally get that right at the third down marker, he was lowering his shoulder, but I have got to learn what that is.

“I get how it is with penalties and stuff because I think he did hit his helmet ... but I thought there had to be intent and something unnecessary, and that was a big play right there.

“For us to lose Greenlaw for the whole game off that, that really shocked me. So, hopefully, they can teach us that so we can understand why we lost one of our players.”

According to Walt Anderson, the NFL's Senior Vice President of Officiating, although the penalty is called on the field, the ejection decision comes from the officiating offices in New York.

Anderson commented that “the timing, the manner in which the player had an opportunity to make other choices and to make a different decision.”

Anderson also commented that Greenlaw essentially hit a “downed runner.”

He continued: “He was down. Whenever [Greenlaw] lowered his head and made forcible contact, the runner was already down on the ground. His knee was already down, and he was tackled.”

The 49ers still won the game, earning a 22-16 victory, and improved to 5-4.