Joanna Rowsell wins Commonwealth Games gold in individual pursuit . The British rider won the women's omnium event at Glasgow 2014 and is now aiming to add a second medal of her own on Sunday. 25-year-old Rowsell suffers from alopecia . Welsh athlete Rhys Williams ruled out after positive drugs test .
Joanna Rowsell wins Commonwealth Games gold in individual pursuit . England 's Rowsell adds to golds at Olympics and world championships . 25-year-old Rowsell suffers from alopecia . Welsh athlete Rhys Williams ruled out after positive drugs test .