Madden NFL 10 was not released on PlayStation 2. The final Madden title for the PS2 was Madden NFL 09 (released August 2008).
EA Sports shifted development focus entirely to PlayStation 3 and Xbox 360 for the 2010 season (Madden NFL 10), leveraging the newer hardware for the "Pro-Tak" animation system and online franchise modes that the PS2 couldn't support.
If you're looking for the last PS2 Madden experience, Madden NFL 09 is it. For Madden 10, you need a PS3, Xbox 360, Wii, PSP, or PC.