He seems to be Gumy.and even has the FILA t-shirt like Gumy used to wear
Looks like Gumy......Walks like Gumy.......TALKS like Gumy....it IS Gumy!!!
would not read much into it tho - Gumy is supposed to be in NY to talk to Marat's friend Sveta about a coaching arrangement....so not surprising he would hit a few balls with Marat!
(at least that was the buzz a couple of months back in the Argentinian press - guess we will have to wait to see if they come to an arrangement!