  We perform a high-precision calculation of the phase shifts for $\pi$-$\pi$
scattering in the I = 1, J = 1 channel in the elastic region using elongated
lattices with two mass-degenerate quark favors ($N_f = 2$). We extract the
$\rho$ resonance parameters using a Breit-Wigner fit at two different quark
masses, corresponding to $m_{\pi} = 226$MeV and $m_{\pi} = 315$MeV, and perform
an extrapolation to the physical point. The extrapolation is based on a
unitarized chiral perturbation theory model that describes well the
phase-shifts around the resonance for both quark masses. We find that the
extrapolated value, $m_{\rho} = 720(1)(15)$MeV, is significantly lower that the
physical rho mass and we argue that this shift could be due to the absence of
the strange quark in our calculation.
