Omega Pharma - Quick-Step track stars Niki Terpstra and Iljo Keisse remain in fourth place after four days of the Six Days of Rotterdam. Jens Mouris and Franco Marvelli retook the first place overall lead with 221 points.
Keisse and Terpstra amassed 187 points by the end of the event on Sunday.
Overall after day 4
1 Jens Mouris - Franco Marvulli (NED/SWI) 221 points
2 Peter Schep - Wim Stroetinga (NED) 202 points
3 Danny Stam - Yoeri Havik (NED) 147 points
4 Niki Terpstra - Iljo Keisse (NED/BEL) 187 points (+ 1 lap)