As a 49ers fan, it's more than 19
Alex Smith
Frank Gore
Michael Robinson
Michael Clayton
Jason Hill
Vernon Davis
Billy Bajema
Delanie Walker
Tony Wragge
David Baas
Adam Snyder
Joe Staley
Patrick Estes
Ronald Fields
Joe Cohen
Ray McDonald
Melvin Oliver
Manny Lawson
Parys Haralson
Jay Moore
Patrick Willis
Tarrel Brown
Marcus Hudson
Darnell Bing
Dashon Goldson
I'm not trying to discourage you or anything but creating a roster for PS2 that's three years down the line from where 2K5 was based on, is a major pain in the ***.
You should look through the rosters here as there was one guy who made a PS2 roster. his user name was "tpateriniti" or something like that. He's the only person that I have ever seen create a roster for the PS2 version.
Again, good luck bud.