The 2015 Crows tipping competition is wide open with three minor rounds to play.

Four tipsters on 129 points are leading the way in the chase for the major prize - a ten-seat corporate box at Adelaide Oval for Crows home games in the 2016 season.

Another four are on 128 but dozens of other tipsters are still within striking distance with 27 games left.

Runner-up overall this year will receive two tickets to this year’s Club Champion event and the third-placed tipster wins a team-signed 2015 Crows guernsey.

Ian Tiggeman claimed the round 20 weekly prize, a $50 CROWmania shop voucher.

It’s not too late to get involved and chase the weekly prize. Join now 

It is easy to join. You just have to register and start tipping!

The Adelaide Crows will do the rest, including calculate winners, margins and ladders and email your results. You can even create your own competition for your workplace, friends or family.