Richie McCaw does miss playing, but is happy to watch the Crusaders march on.

﻿All Blacks legend Richie McCaw is content in the stands watching his former Crusaders side dominate Super Rugby despite conceding that a part of him would like to be playing during the playoffs.

McCaw attended their 40-10 quarterfinal victory over the Sharks in Christchurch on Saturday and the 37-year-old admitted to missing lacing his boots up for the Crusaders, the only club he represented in Super Rugby from 2001-15.

But the former All Blacks openside flanker is happy to watch the reigning champions march on ahead of Saturday's semifinal against the Hurricanes in Christchurch.

GETTY IMAGES Ryan Crotty celebrating Pete Samu's try during their victory against the Sharks.

"I was sitting in the stands last week and you remember back to the times that you [were] lucky enough to do that," McCaw told One News.

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GETTY IMAGES McCaw had a similar view last Saturday.

"There's a little bit [of me that misses it] that sits there, but you get past that and I just enjoy seeing the guys carry on and keeping the Crusaders top of the list.

"Part of you would like to be out there but I can't do that anymore. I just try to enjoy sitting and watching like everyone else."

McCaw retired from playing after winning his second World Cup as captain in 2015 but he still had advice for the Crusaders for their all-Kiwi semifinal clash.

"It's the little mistakes and the back-to-back penalties that are allowing momentum to go against you," he said after revealing he'd been discussing the Sharks game with Crusaders coach and former team-mate Scott Robertson.

"It can just be one or two things like that and you can go from being on the front foot to all of a sudden, with the guys the Hurricanes have got, being under pressure and it can cost you seven points.

"You saw that against the Sharks; the first 20 minutes was all Crusaders and then a couple of mistakes and it was back to an arm wrestle for a while.

"If they can keep those [mistakes] to a minimum, they've definitely got the skill, and with how they're doing things, they'll be good enough as well."