AFL UMPIRES boss Jeff Gieschen has conceded Western Bulldogs big man Will Minson should not have taken the kick that tied Sunday's clash with Richmond.

Umpire Simon Meredith awarded Minson the shot on goal after deciding the ruckman was the closest player to the injured Brian Lake, who had taken the mark before leaving the field with a suspected hamstring strain.

But photos and footage of the incident have shown defender Cameron Wight was the Bulldog closest to Lake, and should have taken the match-defining shot.

"When you look at that incident, you see a number of players flying for the ball in the pack," Gieschen told the Herald Sun.

"Will Minson was in the front of that pack, very close to it."

But, when asked if Minson was the right person to take the shot, Gieschen responded, "Technically not".

He did defend the umpire's actions and said it was increasingly hard to make such decisions in the heat of the moment.

"The umpires don't get a chance to stop the game, go back and have a look at replays and see who is exactly there," Gieschen said.

On Monday, Richmond forward Nathan Brown questioned the validity of Lake's injury, as did coach Terry Wallace after the match.

The Bulldogs released a statement on Monday night revealing Lake underwent an "ultrasound and full medical assessment on his hamstring, hip and back", with results showing "some damage".

The full-back will be limited to light training throughout the week owing to "continual back spasms and hip pain". He will face a fitness test ahead of the Dogs' Saturday night encounter with West Coast at Telstra Dome.

Lake, 26, had surgery to remove cartilage from his right hip during the pre-season following the Dogs' two-week NAB Cup campaign, and was restricted to modified training until close to the home-and-away season.