  Employing a Brueckner-type many-body approach, based on a driving potential
extracted from lattice QCD, we study light quark properties in a Quark-Gluon
Plasma (QGP) at moderate temperatures, $T\simeq$~1-2~$T_c$. The quark-antiquark
$T$-matrix is calculated self-consistently with pertinent quark self-energies.
While the repulsive octet channel induces quasiparticle masses of up to
150~MeV, the attractive color-singlet part exhibits resonance structures which
lead to quasiparticle widths of $\sim$200~MeV.
