GAIN Equine Nutrition will sponsor a series of three 2-year-old races at The Curragh billed as the "Champion Collection", the racecourse announced on Tuesday. The company initially sponsored the G1 Irish St Leger in 2012, switched to sponsoring the G2 Railway S. in 2014 and added the Listed First Flier S. in 2020. The G3 Marble Hill S. will be added to GAIN's sponsorship portfolio for the first time this term. In addition, the winning horse from the GAIN Railway S. will receive a free entry into the G1 Keeneland...