bending radius r of between 0 3 mm and 0 7 mm said bending radius r in particular ranges between 0 45 mm and 0 65 mm according to the invention the fibre characteristics are such that it not only is sufficiently reveliant flexible but that it also has a flexural stiffness such that it will not unnecessarily assume a flat orientation in the artificial lawn artificial grass sports field of which the fibre 10 forms part see fig4 and 5 a drawback of a synthetic fibre having a relatively high flexural stiffness is that players who play on an artificial lawn comprising such u201c stiff u201d synthetic fibres do not consider the field very player friendly in particular such a u201c stiff u201d synthetic fibre will sooner lead to injuries in particular when sliding tackles are made thereon on the other hand a flexible fibre will tend to assume a flat orientation during play on the artificial lawn as a result of which the fibre 39 s functionality as regards the playing characteristics of the lawn will be lost because said flat fibres hard u201c bare u201d patches will form in the field which are also harmful to the players and which increase the risk of injury accordingly it is an object of the invention to provide a solution in this regard and according to the invention.