Brotherly love will be put to the ultimate test should Halil Altintop line up against twin Hamit when Augsburg travel to Darmstadt this weekend.
Hamit and Halil Altintop
In anticipation of what promises to be an eye-catching fraternal showdown, bundesliga.com takes a look at the German top flight's foremost sibling rivalries...
Oh to be a fly on the wall in the Altintop household.
After winning the Bundesliga twice whilst at Bayern Munich and enjoying great success in his native Turkey with Galatasaray SK, Hamit is back on German soil looking to get one over on older brother, Halil.
"We set aside brotherly love for 90 minutes," Halil once said prior to a Bundesliga showdown between the pair in 2009. "He's won more often, but I've scored more goals. They’re always special games. We don't bear a grudge afterwards."
Augsburg's Halil - scorer of 64 goals in 339 appearances in Germany's top flight - is at his fourth Bundesliga station, where he has become a firm fan favourite.
Raffael and Ronny de Araujo
His 54 goals in all competitions have propelled Borussia back into the spotlight, and he remains as relevant as ever in 2016/17, with six goals for the season - including one against Guardiola's Manchester City in the group stages of the UEFA Champions League. You would never have guessed he will be 32 in March.
Another of the de Araujo brood to enjoy footballing deity status, Ronny gave Hertha fans six years of magic.
A year younger than Raffael, he was the capital outfit's stand-out performer in their run to the Bundesliga 2 title in 2012/13 and return to the top flight at the first time of asking.
The former Brazil Under-20 international scored 28 goals in 123 outings for the Old Lady all told, leaving behind a left-footed legacy that is the subject of many a YouTube search to this very day.