Career shapes, by the data
The seven shapes of a boxing career
We took all 999 fighters in the Index, reduced each career to the pure shape of its rise and fall, and found seven arcs that keep repeating. Scroll down to meet them.
First, the raw material
What is peak-form Elo?
One number for how good a fighter was at their best, year by year: it climbs when you beat strong opponents and falls when you lose to them. The numbers up the side are real Elo ratings. Here are three greats: different eras, different peaks, different lengths.
The trick
Same shape, different size
To compare the shape of a career and not its size, we stretch every fighter into the same square: first fight to last across the bottom, their own worst to best up the side. Watch the three snap into place.
All 999
The lightning
Do that for every fighter in the Index and a pattern appears in the noise. Seven shapes keep recurring, and the most common is not the one you would guess. Scroll on to meet them.
Shape 1 of 7 · Climbed and never came down.
Out on top
Lennox Lewis #15 · Peak Elo 2144
Lewis avenged his only two defeats, knocked out Mike Tyson, beat Vitali Klitschko, then walked away as undisputed champion. The line never turns down because he never gave it the chance. Tellingly, leaving on top is mostly a modern habit, bought with money and medicine; the old-timers fought until they could not.
Shape 2 of 7 · A long plateau at the very top.
The reign
Canelo Álvarez #5 · Peak Elo 2246
More than a decade parked at the top of the pound-for-pound list, taking on every name they put in front of him across four divisions. No spike, no crash, just a long plateau, because staying there was the whole feat.
Shape 3 of 7 · A patient climb to a late peak.
The slow burn
Tyson Fury #82 · Peak Elo 2139
Fury beat Klitschko, then vanished into depression and a frame that ballooned past twenty-five stone. The comeback should not have worked. The line climbs late and slow to a peak almost nobody saw coming.
Shape 4 of 7 · Peaked young, then chased it.
The early crown
Mike Tyson #35 · Peak Elo 2109
The youngest heavyweight champion ever at twenty, untouchable by 1988, then three prime years lost to a prison sentence. The fighter who came back met Holyfield’s shoulder and Lennox Lewis’s right hand. A summit reached before the climb had really begun.
Shape 5 of 7 · One summit, then a long fade.
The long goodbye
Muhammad Ali #9 · Peak Elo 2097
The most common shape of all, and the one nobody wants: a third of the entire Index ends this way. Ali had nothing left to prove and kept proving it, one fight too many, all the way to Holmes and Berbick. Joe Louis, Henry Armstrong and Chavez gave the same long goodbye. Even the greatest mostly leave like this.
Shape 6 of 7 · Fell, then climbed to a second peak.
Risen twice
Roberto Duran #73 · Peak Elo 1956
“No Más” should have ended it. Instead Durán fought on into a fourth decade, winning titles long after the obituaries were written. Two peaks, years apart, with a valley of doubt between them.
Shape 7 of 7 · Losses and comebacks, no straight line.
The hard road
Wladimir Klitschko #13 · Peak Elo 2177
Knocked out early and often enough that people stopped believing, then rebuilt into one of the longest heavyweight reigns in history, then lost it all to Fury and Joshua at the death. Up, down, up, down.
Your turn
Find your fighter's shape
Every profile in the Index shows that fighter's own curve. Search any of the 999 below, or open the leaderboard to see which of the seven shapes your favourite belongs to.
Open the All-Time IndexNow you
Trace any fighter's shape
Search any of the 999 ranked fighters and watch their normalised career light up against the rest of the Index. Hover the bright line for their figures.
Shapes are derived from each fighter's peak-form Elo trajectory (peak timing, decline, sustain, multi-peak, monotonic rise). A new lens on the published Index data; it changes no scores or ranks.