Mladen Devetak is a Serbian professional footballer who currently operates as a left-back for Croatian top-flight side HNK Rijeka. The 26-year-old defender, born on March 12, 1999, has developed into a reliable and modern full-back, known for his ability to contribute in both defensive and attacking phases. Standing at 183 cm and weighing 72 kg, Devetak combines physical presence with good technical ability. His career began in his native Serbia before he made the move to Rijeka, where he has established himself as a key component of their defensive line. Capable of playing as a traditional left-back or in a more advanced wing-back role, his market valuation of €1 million reflects his importance to the club. While yet to earn senior international honors for Serbia, his consistent performances in the Croatian First Football League mark him as a player with solid potential for further growth.