Adelaide Crow Lachlan Murphy and (inset) Lance Franklin. Pictures: AFL Photos

IT'S A brutal sledge to cop in just your 13th match of AFL football.

Adelaide forward Lachlan Murphy has revealed the moment he was mistaken for a 'waterboy' by Sydney superstar Lance Franklin in round two last year.

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"Sydney were having a shot for goal and Buddy was standing on the 50," Murphy told the club's website.

"I went to stand behind him because I was star-struck. (I) was three metres behind his shoulder.

"He turned around and indicated he wanted a drink of water, then realised I was a player and said, 'Oh, sorry mate'.

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"He gave me a quick tap on the shoulder and ran off."

The Crows had the last laugh, winning by 26 points despite Franklin's best efforts with three majors.

Kyle Hartigan has a chat to Lance Franklin in R2, 2019. Picture: AFL Photos

Murphy's teammate Brodie Smith recalled a similar whack from the 944-goal forward earlier in his career.

"Years back he (Franklin) told us he was on more than our backline combined... we've since done the math... he was right," Smith tweeted.

Murphy, who lives with teammates Elliott Himmelberg and Myles Poholke, has been training at home in preparation of a hopeful return to training on May 18.