first off, they are lowryders... arent they?

and secondly, whats your problem? i see pics, but nothing is wrong in the pics, if its the seedling your talking about, and it hasnt grown at all, the roots are suffocated, just put it in a pot with lots of holes in and dont pat down the soil so hard.
if its the weakling your talking about, with those leaves going yellow, dont worry, they are cotyledons, which store the plants nutrients to carry it into adolescence and they will die when they need to, hope this helps, nice grow, ill be watching from the shadows...