Two lucky fans will win the chance to mix with rugby league and basketball royalty at the NRL grand final on October 6.

NBA great Paul Pierce is heading to Australia on his six-day "You're A Legend Tour", which includes a visit to ANZ Stadium for the NRL's crown jewel event.

Also present will be North Queensland Cowboys hero Johnathan Thurston, with the retired sporting giants to mingle at the match.

The NBA and NRL are providing two supporters the opportunity to be a legend for the day with a double-pass to meet Pierce and Thurston on the sideline pre-game.

The winning duo will also watch the action in the luxury of corporate hospitality.

To enter the competition for this money-can't-buy experience, fans must explain in 25 words or less which NRL player could make it in the NBA and why.

In addition to the grand final, Pierce will appear at the NRL Fan Fest in Sydney's Martin Place on Friday, October 4.

The 41-year-old, nicknamed "The Truth", won the 2008 NBA Championship with the Boston Celtics and took out Finals MVP honours.

After playing 15 years at the Celtics, the 10-time NBA All-Star had stints with the Brooklyn Nets, Washington Wizards and Los Angeles Clippers before retiring in 2017.

He has been impressed by footage of the NRL and is excited to watch the code live.

"I’ve seen some clips of the NRL and it looks like a pretty physical game. I’ve heard it’s the biggest day of the year down there so I can’t wait to check it out," Pierce said.

Rugby league fans will be well versed in Thurston's achievements, the halfback excelling at club, state and international level during a phenomenal career.

The 36-year-old, who hung up the boots at the end of last season, is forever enshrined in Cowboys history after helping deliver their maiden premiership in 2015.

Click here to enter the competition by telling us in 25 words or less which NRL player could make it in the NBA and why.