We studied the evolution of Wightman correlator in a thermalizing state using holography. We gave a prescription for calculating the correlator in coordinate space. For equal-time correlator (0(v, x)0(v, 0)), we obtained an enhancement factor v~2 due to long range correlation present in the initial state. This was missed by previous studies based on geodesic approximation. We also studied spatially integrated correlator and presented evidence indicating that our intuition from equilibrium physics is not necessarily true for a far-from-equilibrium state. We also calculated radiation spectrum of particle weakly coupled to O and found low frequency mode thermalizes faster than high frequency mode.
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