Keep
Brisbane Lion dynamo Dayne Zorko [FWD/MID, $440,700] was the AFL Fantasy poster boy last season.

But other AFL clubs have caught on to his ways and have started to put some significant time in to trying to stop him.

Get all your AFL Fantasy news here

Scores of 52, 75 and 51 from the first two rounds don't make for pretty reading, but a price drop, after these poor scores, make Zorko even more affordable.

Now's not the time to part ways, because you know how damaging Zorko can be when he's rolling.

Trade
Investing in Matthew Kreuzer [RUC, $398,400] looked to be paying off, until the thumb injury sustained against Geelong at the weekend kept him to 21 fantasy points and a significant stint on the sidelines.

Kangaroos ruckman Todd Goldstein [RUC, $432,500] has been carving it up in the fantasy competition and may be worth the extra cash to upgrade to.

If you want to free up some cap space, Brisbane Lions big man Matthew Leunberger [RUC, $233,500] is set to soar in price next round; so jump on before it's too late.

Invest
Dustin Martin [FWD/MID, $461,400] ripped the Western Bulldogs to shreds at the weekend.

Martin scored a round-high 144 fantasy points from 35 possessions, and showed everyone that he's ready to take the next step in to fantasy superstardom.

If he shows he can consistently chalk up scores in that vicinity, then you would be hard pressed to find a better forward option than Martin.

New kid on the block
Sam Mayes [FWD/MID, $152,200] was selected at pick No.8 in last year's draft for a very good reason.

In his Lions debut against Gold Coast, the smooth-moving Mayes collected 95 fantasy points in a stellar outing.

His ability to hit the scoreboard and rack up possessions through the midfield, as well as rolling forward, should appeal to fantasy coaches.

That hurts
He was the buzz man of the AFL Fantasy competition through the pre-season, but it's time to cut your losses with Travis Varcoe [MID/FWD, $227,700].

Varcoe's shoulder injury is expected to keep him out for up to 12 weeks, so trading him out is essential.

West Coast's Josh Kennedy [FWD, $335,700] was a colossus against Melbourne in scoring 113 fantasy points, and is worth the investment if you can afford him.

Sam Mayes is your man if you want to create a bit of breathing space in your cap room.

With a few significant injuries around the place, bringing in the right player to complement your side is a must.

The players at the top of the fantasy leaderboard have been extremely consistent over rounds 1-3, so look at bringing them in before they slow down.

Ben Guthrie is a reporter for AFL.com.au. Follow him on Twitter - @AFL_BenGuthrie