The barrel racer kept her same schedule for the 16 - year - old chestnut gelding .
Lockhart used her backup horse , Chism , for the summer months of the 2014 season .
The barrel racer kept Lockhart 's same schedule for the 16 - year - old chestnut gelding .
Lockhart used her backup horse , Chism , for the summer months of the 2014 season .