TRACK CYCLING Jan Willem van Schip has lost the leading position of the Six Days of Rotterdam. De Schalkwijker, who forms a couple with Youri Havik, is in third place after the fourth day. Among the women, who do not ride in pairs, Nina Kessler from Breukelen has also fallen further. She is now fourth. (Friday December 13)
Sports Short week 50: Van Schip has lost the leading position, Griffioen has reached the National Championship finals
