King will miss the Tigers' final round clash with North Melbourne on Sunday and the first game of next season after failing in his bid to have overturned a two-match suspension for a sling tackle on Adelaide's Andy Otten.
Central to King's case was that Otten didn't leave the field with symptoms of concussion until a quarter after the incident happened.
Otten's head hit the ground when he was tackled by King late in the third quarter, but Richmond showed footage of the Crow running up the ground and getting involved in play a short time later.
It wasn't until late in the final term that Otten left the field.
A medical report from Adelaide's doctor said the defender experienced dizziness and vomiting and was kept in hospital overnight, but that due to memory loss he was not aware if he'd suffered another head knock later in the match.
King's advocate Michael Tovey QC argued that, with doubt around when the concussion happened, there was not enough evidence to suggest that the level of force used by the popular Tiger was enough for a report.
But the tribunal determined that on the balance of probability, Otten's concussion most likely was as a result of King's tackle, and upheld the match review panel's assessment of the incident as negligent, low impact and high contact.
Normally that would mean a one-week ban, but King's poor record meant the penalty was increased to two matches, which could not have been reduced even with an early guilty plea.
The charge came about a day after the usual MRP assessment after the AFL football operations department was contacted by Adelaide asking for an explanation of the incident.
However, the Crows pointed out that they did not lodge a formal complaint.
"Jake is disappointed he will miss the final game of the season, but we accept the decision of the AFL Tribunal," Richmond general manager of football Craig Cameron said.
"The circumstances by which the charge was reviewed were unusual, but we are now focused on this week’s game against North Melbourne."
