It’s time for another Edinburgh derby, with one of these two set for a far earlier Scottish Cup exit than they would’ve hoped for.
Just last season, they clashed in the semi-finals of this competition, with Hearts running out 2-1 winners at Hampden.
In general, the Jambos have dominated this rivalry recently, winning six of the last ten derbies, including a thumping 3-0 victory just 20 days ago.
So, will Scotland’s capital be draped in green or maroon on fourth round Sunday?
Heart of Midlothian could hardly come into this game more full of confidence, after hammering Aberdeen 5-0 on Wednesday.
Michael Smith, Josh Ginnelly, Lawrence Shankland and Cammy Devlin all on target in the Jambos third-biggest top-flight win of all-time.
Robbie Neilson’s side are now unbeaten in eight Premiership matches, only losing at Ibrox since 22 October, so are now seven points clear in third.
Hibernian meantime are all the way down in sixth, 11 points worse off than their fierce rivals.
The Hibees needed a stoppage time equaliser from Kevin Nisbet to salvage a point against Dundee United last weekend.
Nevertheless, this means Lee Johnson’s side have won just three of their last 13 league matches, losing nine of them.
Hibs do have home advantage, but Hearts are favourites to leave Easter Road with a fifth round tie to look forward to.