On Monday in Rio, Luxembourg's Gilles Muller defeated France's Jo-wilfried Tsonga in the second round of the men's tennis singles.

33 year-old Muller defeated 31 year-old Tsonga in straight sets, 6-4, 6-3, in one hour and 36 minutes.

Muller's win is all the more remarkable as, while he is ranked #37 in the world, his French opponent is ranked #9 in the world at present.

Gilles Muller will play his 3rd round match on Wednesday against Spain's Roberto Bautista Agut, the 10th seed and ranked #17 in the world..