With only four rounds to play, every selection is now vital in the race to win the 2016 Chemist Warehouse Crows Tipping competition.

Harrison Bishop’s margin has been cut to one point at the top of the overall leaderboard.

He now has 128 points in the chase to win the major prize, a ten-seat corporate box at Adelaide Oval for Crows home games in the 2017 season.

Runner-up will receive two tickets to this year’s Club Champion event.

David Jucha was the Round 19 weekly winner, one of a number of tipsters to pick all nine games. He wins a $50 CROWmania voucher.

Meanwhile, the Gauntlet and Pick Five knock-out sub-competitions are also moving closer to a conclusion. Only two tipsters remain in the Gauntlet.

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Signed Crows guernseys will also be the prizes for the Gauntlet and Pick 5 mini-competitions.

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 also easily create your own competition for your workplace, friends or family.