After their dismal start to the year, the history books provided no solace to the early-season Swans, showing no team had ever climbed back to the finals from their position. But our Elo projections weren't quite so pessimistic. Even after going 0-4 to start the season, our simulations still gave them a healthy 42 percent chance of sticking around until September; by the time they were 0-6, deep in 'historically unprecedented' territory, Elo gave Sydney a 15 percent chance.

The Swans are only a game out of the top four, and the betting markets currently give them the second shortest premiership odds of any team in the competition, behind only the Crows. After having been down for the count, Sydney aren't just looking like scraping in to the finals, they are a genuine contender.

So what has changed for Sydney since their terrible first month and a half? In short: most things. Their performance has improved in all parts of the ground.

In the opening six rounds of the season, the Swans were performing fairly poorly in the midfield, only managing to get the ball inside their attacking 50m arc 0.89 times for every time their opponents recorded an inside 50, on average. From Round 7 onwards, that ratio has turned around quite dramatically, with the Swans now averaging 1.2 inside 50s for every one they concede. They've gone from the fifth-worst inside 50 ratio in the competition early in the season, to the second best ratio (behind Port Adelaide) from Round 7 onwards. Their midfield is firing again.

The Swans have become more effective at using the ball when it gets into their 50m arc as well, recording 0.51 scoring shots for every inside 50 since Round 7, compared to just 0.42 in the opening rounds of the season. At the defensive end of the ground, they've tightened up considerably, restricting their opponents to just 0.4 scoring shots for every inside 50, on average. The Swans have improved in all parts of the ground.

The Swans' turnaround has been broadly based, but their performance at the contest really stands out. In those first winless six games of the year, the Swans were averaging 2.8 clearances less than their opponents, and a massive 11.3 fewer contested possessions. Those figures have turned around dramatically.

In that early part of the season, their average net contested possessions per game was the equal second worst in the league, tied with the Lions and only above the then-woeful Hawks. From Round 7, Sydney's average net contested possession count of 13.8 per game has been easily the best in the competition, with Port Adelaide in second place on an average of 8.5 net contested possessions per game.

Even after losing their first six games of the year, the Elo ratings system still regarded the Swans as an above-average team. They had a rating of 1522, compared to a league average of 1500. Since then, they've bounced back firmly into 'genuine contender' territory, and are now rated 1625, just behind the league-leading Crows.

The Swans are now about as good as they were this time last year, when they were many people's picks for the flag. They're right back in it for 2017, and if they do end up winning it all, it'll be a premiership journey for the ages.