The German national team's World Cup campaign came to a dramatic end as they were knocked out on penalties after a 1-1 draw with Paraguay.
The four-time world champions appeared to have found a late route into the next round when Jonathan Tah's extra-time header was disallowed, sparking a huge debate over the referee's decision.
The defender's goal was ruled out for a foul on Paraguay goalkeeper Orlando Gill, as determined by VAR, leaving many to question the consistency of the technology.
Jurgen Klopp, the former Liverpool manager, weighed in on the controversy, using the incident to make a pointed comparison with Arsenal's set-piece tactics.
Klopp suggested that if Anton's contact on Gill was enough to cancel Germany's goal, then similar set-piece situations should be judged the same way everywhere, highlighting a bigger problem for football: where is the line between clever blocking and a foul?
Arsenal have become one of the most dangerous set-piece teams in Europe, using clever blocking, movement and delivery to create chances from corners and free-kicks.
Klopp's comments were not an attack on Arsenal, but rather a complaint about consistency, and his frustration is understandable, given the feeling that similar incidents are treated differently depending on the match, referee or competition.
The controversy will not disappear quickly, and for Germany, the disallowed goal could have changed everything. However, for Arsenal, Klopp's comment serves as a reminder of the attention their set-piece dominance now attracts.
Arsenal's star players have become the focal point of many teams' defensive strategies, and their ability to score goals from set-pieces has become a major reason behind their success.
Paraguay, on the other hand, deserve credit for surviving the pressure and winning the shootout, and the controversy will likely continue to be a topic of discussion in the world of football.
