A LACK of protection from teammates is a key factor in negating Carlton captain Chris Judd, according to former Richmond star Matthew Richardson.

Richardson scrutinised Judd's game in this week's edition of The Whiteboard, noting that a lack of blocking from Carlton teammates at stoppages had made it harder for Judd to find the space he had when he was a part of the premiership-winning West Coast team of 2006.

"Against the Saints (in round seven) he wasn't tagged. (Marc) Murphy was tagged and Kade Simpson was tagged but that didn't stop him being a team target," Richardson said.

"When any of the Saints players had the opportunity they were very disciplined to niggle him and close down his space."

Judd won the Brownlow medal as an Eagle in 2004 and as a Blue in 2010.

Richardson pointed out other deficiencies in Judd's game such as his struggles to take overhead contested marks which he said was 'the biggest chink in his armour' but made sure to highlight his strengths.

Since his debut in 2002, Judd has been known for his ability to burst away from a stoppage, while kicking to space is another dangerous weapon.

Watch The Whiteboard for more analysis of Judd's performances.