In 2003-04, Arsenal had what is arguably their best team in their entire illustrious history as Arsene Wenger built a starting XI where every player was in the conversation as a legitimate top five player in their position in the world at that time.
Led by Patrick Vieira, a physically-dominant box-to-box sensation and supplemented by the creativity of attackers Freddie Ljungberg, Robert Pires and trequartista Dennis Bergkamp, the Gunners also possessed one of the division's most feared strikers in Thierry Henry.
On their best day, they could put a team to the sword, like their 5-1 mauling of Internazionale - in Milan - is testament to and, at their worst, they would only draw - as the back five of Bisen Lauren, Ashley Cole, Sol Campbell, Kolo Toure and Jens Lehmann could rival the iconic defensive masters of the early 1990s.
Arsene Wenger, of course, engineered an undefeated season - much like he said he would in the years prior, but was not taken seriously.
It was regarded to be one of the finest moments, a never-before-witnessed demonstration of consistency throughout an entire campaign - and only Preston North End in the 1880s were able to achieve a similar feat - albeit in a 22-game league campaign, rather than a 38-match haul.
A decade after Arsenal emulated PNE, though, Sparta Prague could do precisely the same thing. Suddenly, an Invincible team loses it's edge as, if Sparta are able to become another Invincible, it becomes more common, rather than the rarity it was ten years ago.
"We can finish the season unbeaten," said midfielder Borek Dockal to the official website of FIFA. "I cannot see any reason why we should lose a game. It may happen as there are many factors in any given match, but we have the quality to achieve this. It would be a huge boost for next season if we finish the current one unbeaten."
He continued: "We know that we are the only ones who can spoil it, but I believe we are strong enough to finish the job. We have had a great season so far. When we play at home there is extra support; our opponents feel that we are confident at Letna.
"We do not talk about the fact that we have won all our home games, but we leave the dressing room with a determination to win."
Sparta Prague are the only top flight side in Europe yet to register a defeat this season. They are currently ten points ahead of Viktoria Plzen having won 20 and drawn four from their 24 games to date.