Marcel Petrov, known as Wang Hanlong (; born 20 March 2006) in China, is a professional footballer who plays as a forward for Shanghai Shenhua. Born in China, he was a Slovenia youth international.
Early life.
Petrov was born on 20 March 2006 in Yiwu, Zhejiang, China. Born to a Slovenian father and a Chinese mother, he started playing football at the age of six.
Club career.
As a youth player, Petrov joined the youth academy of Chinese side AKSIL FC. Subsequently, he joined the youth academy of Slovenian side Olimpija, where he was the second top scorer of the under-15 league during the 2020–21 season. In 2025, he signed for Chinese side Shanghai Shenhua. 
Style of play.
Petrov plays as a forward. Sohu wrote in 2025 that "his physical fitness and shooting skills were impressive [while training with Shanghai Shenhua]".