Construction history, with Poly Smooth aplied, is maintained. So if you want fewer polys on the model all you have to do is change the smoothing level. Currently the smoothing level is set to 2 (43200 polys); you can change it to 1 or 0 (2700 polys) for fewer polys on the soccer ball. OBJ file does not include polySmooth option; instead 3 soccer balls of varying smooth levels (0, 1, &2) are included in the file.
.mb and .ma formats. All seams are modeled in! No bump maps used to create seams, like other soccer ball models. Suitable for all your soccer ball needs!