On 18 August 2013, Petropoulos made his debut with his new team and scored one goal in a 2-1 home victory against Aris.
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He scored another goal against Aris F.C. on 20 January with a great header after a cross by Michalis Pavlis He scored for third match in a row against OFI
In December, in order for Panathinaikos' president, Giannis Alafouzos, to save money for the team, he released players with high-paying contacts; as a result Christodoulopoulos was released alongside Nikos Spyropoulos, Loukas Vyntra, Antonis Petropoulos and Sebastian Leto.
Antonis Remos | Antonis Mor | Antonis Samaras | Antonis Prekas | Antonis Petropoulos | Antonis Antoniadis |