Reilly O'Brien will become the 209th player to represent the Adelaide Football Club in an AFL game for premiership points on Saturday night.

Here are five things you might not know about the second-year Crow ...

1. His nickname is ‘ROB’
If it's not immediately obvious, this is a combination of his first initial and surname (ReillyOBrien)

2. ROB lives with Crows teammates Mitch McGovern and Harry Dear
The interstate trio moved in together before the start of this season after spending the first year in Adelaide with host families. It's a challenge for the developing big men to keep the fridge stocked - O'Brien, in particular, has a reputation for being one of the biggest eaters at the Club!

Watch the Crow Cribs tour of their house 

3. The Moonee Valley junior hasn't always been a ruckman
Growing up, O'Brien played a lot of footy at centre half-back. He stood Collingwood Rising Star nominee Darcy Moore during in 2014 TAC Cup decider. He also floated forward at times, which he's continued to do with great effect at SANFL level.

4. He's pretty switched on 
In Year 12, O'Brien achieved an impressive ATAR score of 99.75

5. He's putting those smarts to use
The 20-year-old is studying a university degree in biomedicine

Find out more about Reilly O’Brien in his CROWfile

Below: Reilly O'Brien competes with Darcy Moore in the TAC Cup