MUCH-LOVED former Hawthorn superstar Cyril Rioli has been confirmed as the last sporting champion to take the plunge as part of the Big Freeze at the 'G on Monday. 

The four-time premiership Hawk and Norm Smith medallist was locked in on Thursday to be the 14th slider during Collingwood's clash with Melbourne on Queen's Birthday.  

Chris Judd, Dane Swan, Nick Riewoldt, Jobe Watson and Sam Mitchell are some of the other ex-AFL stars preparing for the slide into icy water.  

Former basketball great Lauren Jackson, Olympic cycling gold medallist Anna Meares and Australian netballer Bianca Chatfield will also support the cause raising funds for motor neurone disease research.  

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In its fifth year, FightMND has raised millions of dollars to help find a cure for the disease. 

Popular beanies will be on sale at six AFL matches over the next three rounds, starting with Friday night's blockbuster between Richmond and Geelong at the MCG. 

The Magpies' meeting with the Demons will be streamed on the AFL Live Official App from 2pm (AEST) on Monday, with the celebrities sliding before the opening bounce at 3.20pm.