There have been several changes made to upcoming races in the UK and the overall race programme, the British Horseracing Authority announced on Monday. The September to December Fixture List is still under discussion with more updates expected later in the week. As of now, the changes are: Beginning in August, field sizes for Jump races can revert to the maximum limit imposed by the racecourse. Chester's Aug. 9 fixture will move to Aug. 10 Windsor's Aug. 10 fixture will move to Aug. 9 Chester's Aug. 14 fixture is unchanged...