If a voice sounded familiar to the fans at center court this year, it was for a very specific reason: football legend Herbert Prohaska provided his distinctive voice for the out-call.

Most recently, Prohaska himself was a guest at the Wiener Stadthalle and couldn't help smiling when he heard himself shouting "Out".

For the audience, a short video was played on the large Vidi-Wall at center court showing how Prohaska's voice was recorded.

Picture: e|motion/Bildagentur Zolles KG/Sascha Feuster