The FA Cup provides Chelsea manager Andre Villas-Boas with some much-needed respite from the intensity of his first ever Premier League season.
Fortune has smiled upon the Portuguese, affording him a home tie against a team languishing towards the bottom of the Championship.
It is a sad indictment of the speed at which Portsmouth have plummeted down the footballing food chain to remember that this was the final of this competition just two seasons ago.
A similar run for the club from the south coast looks unlikely any time soon, with financial survival their most pressing concern.
Nevertheless, the fans and players alike will relish a trip to Stamford Bridge and Pompey are priced at 11/1 to cause a massive upset, while Chelsea are on offer at 4/25 to win and the draw is available at 23/4.
It has not been the happiest of seasons for Chelsea and that has been reflected in their performances on the pitch.
Stamford Bridge, which was once a fortress, has lost its intimidating edge. The Blues have lost three league matches at home this season already, as many as Manchester City, Tottenham, Arsenal, Liverpool and Swansea put together.
Yet they really should overcome a Portsmouth side dogged by poor away form – they have won just once on the road in the league in nearly ten months.
But this, as any romantic will tell you, is the cup of dreams where anything is possible. I do not see Portsmouth winning the match but I can see them frustrating an already fractious Chelsea side until at least half-time.
The draw at half time is available at 39/20 and that looks highly tempting. However, even more appealing is Chelsea to win after a drawn first half, which is available at 13/4.
New customers can register here to claim a free £25 bet or click here to see all our FA Cup odds.
Follow us on Twitter @bwinbetting