Dortmund rib Real Madrid ahead of Champions League clash
The German side, who host Los Merengues at Signal Iduna Park on Tuesday, tweeted a jokey message to the European champions. <ul> <li> <a href="http://en.as.com/en/2017/04/12/football/1491990289_587905.html" title="Borussia Dortmund vs Monaco live online: Champions League 2017 Quarter Final">Dortmund vs Monaco</a> </li> </ul>

Borussia Dortmund have taken to social media with a light-hearted message to Real Madrid, their opponents in the Champions League group stage on Tuesday.
Having won their first four LaLiga games of the season, Real have since been held to draws by Villarreal and Las Palmas in consecutive league fixtures in recent days.

"Hard time playing teams that wear yellow?"
And with both stalemates coming against sides who, like Dortmund, play in yellow, the Bundesliga outfit on Sunday took the opportunity for a cheeky quip referencing that fact.
In a post on their Twitter profile, Borussia wrote: "You're having a hard time playing teams that wear yellow, do you @realmadriden?"
Läuft derzeit nicht so gegen gelbe Teams, oder? 😉// You're having a hard time playing teams that wear yellow, do you @realmadriden? 😉 https://t.co/aESGz1Os9n
— Borussia Dortmund (@BVB) September 25, 2016
Sporting Lisbon join in
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Although Madrid opted not to reply, Portuguese club Sporting Lisbon did - with a tweet alluding to the narrow nature of their defeat to Los Blancos in the sides' European opener earlier this month.
"And green as well!" chipped in Sporting's community managers, before adding: "Best of luck to you both!"
.@BVB @realmadriden and green as well! 😎 Best of luck to you both!
— Sporting Clube de Portugal 🏆 (@Sporting_CP) September 25, 2016
