How to track rival trades in your fantasy league
A rival trade history is built from snapshots. Record each team after lockout, compare the squad with its previous round, and the names that disappeared and arrived are the trade. The method is simple. Keeping it going for an entire league is the tedious part.
What a trade history actually records
A completed fantasy trade changes the set of players in a squad. If one name is present in your Round 6 snapshot and absent in Round 7, that player went out. A new name appearing in the same comparison came in. Repeat the comparison for every team and you have the league's trade history for that round.
This is a record of net roster changes, not a replay of every tap made in the trade screen. A coach might reverse three ideas before settling on one move. None of the abandoned versions matters once lockout has passed, and a snapshot cannot see them anyway.
A worked example. Say a rival's Round 8 squad contains 29 players. In Round 9, 27 names are unchanged, two have gone and two new players have arrived. The defensible conclusion is two net trades. The snapshots do not prove which outgoing player funded which incoming player, so a good tracker does not invent the pairing.
Why the first round is only a baseline
One roster tells you what a rival owns now. It says nothing about how they got there. Trade history begins with the second capture because there must be an earlier squad to compare.
Starting late is still worthwhile. Your first capture becomes the baseline and every later move can be tracked from there. What you cannot reconstruct honestly is the unrecorded part of the season. A tool that claims otherwise is either using a separate historical source or guessing.
Capture after the changes are visible
The useful snapshot is the roster that survives lockout. During a rolling lockout, parts of a rival team may still be hidden or changeable. AFL Fantasy's own support guidance says a rival's traded-in player becomes visible only after both the incoming and outgoing players have locked. That is why a mid-round glance can give you an incomplete answer. See AFL Fantasy's lockout explanation.
Pick a consistent point after lockout and record the whole league then. Consistency matters more than the exact hour. If one week's snapshot is taken while teams are still changing and the next is taken after the round, the comparison mixes two different states.
What happens when you miss a round
A gap does not make the next comparison useless. It changes what you can claim. If your last snapshot was Round 7 and the next is Round 9, you can report the net changes across that span. You cannot assign each move to Round 8 or Round 9, recover the order, or detect a player who was sold and bought back between the two snapshots.
Good trade history is comfortable leaving that uncertainty visible. It is better to show "changed since Round 7" than turn a missing observation into a precise but fictional timeline.
The rival patterns worth watching
A list of names is useful, but the repeated choices are where it starts helping with decisions. These are the patterns worth checking across several rounds:
- Closing a shared gap. Several rivals bring in the same high-owned scorer you still lack.
- Creating a new league POD. One coach buys a player nobody else in the league owns.
- Rookie timing. A rival moves a cash generator on early, holds through another rise, or arrives after the cheap price has gone.
- Churn. A player is sold, then bought back after an injury, suspension or poor run has passed. That can be sensible, although the round trip costs trades.
- Repeated team repair. The same line is changed again and again while another part of the squad is left alone.
The trade itself does not reveal motive. An injury, a bye, price movement or a fixture may explain it, but those are interpretations that need supporting information. Start with the change you can prove, then look for the reason.
League trades and popular trades are different questions
Competition-wide trade lists tell you what thousands of coaches are doing. Your private-league history tells you what the people affecting your ladder are doing. A heavily traded-in player may still be absent from your league. A move that barely registers globally can change several of your remaining matchups if the right rival makes it.
This is the same distinction that matters for ownership. Public popularity is useful context, but your league decides whether a player is shared, a gap or a real point of difference.
What roster comparison cannot see
Squad membership is only one layer of a fantasy team. Moving a player from the bench to the field, switching positions, changing an emergency or choosing a new captain can affect the score without creating a trade. Those actions should not be added to a trade count.
Multiple changes also need care. If three players leave and three arrive, the snapshots prove six roster changes and three net trades. They do not prove three exact out-to-in pairings. The coach may have used dual-position moves or a chain of price changes that makes several pairings possible.
How Fantasy League Lens keeps the record
Fantasy League Lens captures the rosters visible in a league after lockout and stores each round as a separate snapshot. When you load the next round, the analysis engine compares each team with its previous recorded squad. Departures and arrivals become that team's trade entry. Nothing is filled in for rounds you did not capture.
The full rival trade history is part of the free tier. The capture runs in your signed-in browser session and never asks for your fantasy competition login details. Your results are not posted to the league or combined with other users' captures.
First capture sets the baseline · No credit card · Nothing shared with your league
Rival trade history questions
Can I see a rival's trades before lockout?
Not reliably. A trade can remain hidden or be reversed while the relevant players are unlocked. A completed-round snapshot records the roster that survived lockout, which is the version worth keeping.
How many captures do I need before trade history appears?
Two. The first capture is the baseline. The next capture can be compared with it to show which players left and arrived for every team recorded in both rounds.
What happens if I miss a round?
The next capture still shows the net roster change since your previous one, but it cannot tell you which move happened in which missed round or reveal a player who was traded out and back in between snapshots.
Does moving a player on field or changing captain count as a trade?
No. Trade history compares squad membership. Bench moves, position switches, emergency changes and captain choices can alter a lineup without changing the players in the squad.
Does this work for fantasy draft leagues?
No. This guide and Fantasy League Lens cover the salary-cap Classic formats. A draft league has player-to-player deals, waivers and unique ownership, so its transaction history needs a different model.