Huge match for Soares Dias. Definitely a test for him.
Kasarev under Fandel's eye. I wonder what this appointment means. Also a test for Sidiropoulos.
Siebert with an important observer too... perhaps a sign of starting to look beyond Brych in the coming years?
I don't know why they focus on Siebert more than on Stieler. The former is far, far from complete referee...
Siebert is younger, though. He is 35 and Stieler is 38. He has more years to develop.