Novak Djokovic was seen wearing a raised collar shirt at the FIFA World Cup final to honor Serbian soccer player and manager Sinisa Mihajlovic who passed away recently.

On his Instagram page, Djokovic wrote:

Rest in peace, dear Siniša. My condolences to the Mihajlovic family. Thank you for everything you did for our sport, as well as in Italy. Your mark is indelible.

Mihajlovic played most of his career in the Italian Serie A. He is considered one of the best free kick takers of all time. He represented Yugoslavia in 63 matches. He coached the Serbian national team from May 2012 to November 2013.