Eintracht's potential opponents in UEFA Europa League qualifying have thus far had greater impacts on their domestic competitions than they have in Europe.
Estonian side FC Flora Tallinn are particularly tricky opponents, having won the Premium Liiga title a record 11 times since the club's founding on 10 March 1990. Although the last of those triumphs came in 2017, Tallinn currently top the standings with 40 points from 16 games. The team's top scorer is 19-year-old Erik Sorga, who has 16 goals so far this season, while their home stadium, the A. Le Coq Arena, has a capacity of 9,692 spectators.
FK Radnicki Nis are also a force to be reckoned with in Serbia, having surprisingly finished as runners-up to Red Star Belgrade last season. New Eintracht summer signing Dejan Joveljic will know them well after making two brief appearances against them last term.
Should the Eagles end up playing Radnicki, Eintracht brand ambassador Dragoslav Stepanovic could well provide some insider knowledge, having been head coach in Nis – Serbia's third largest city – for seven games from July to September 2014.
The club, founded on 23 April 1923, enjoyed its most successful period several years ago when they reached the semi-finals of the UEFA Cup in 1982, only to lose to Hamburger SV. Last season Radnicki reached the second round of Europa League qualifying, but were eliminated by Maccabi Tel Aviv following a 2-0 defeat and a 2-2 draw across the two legs.