Carothers trained Strolling Jim, the first Tennessee Walking Horse to become World Grand Champion of his breed.
[3] Carothers and fellow trainer Henry Davis operated a horse training stable in Wartrace.
On April 30, 1939, they purchased a three-year-old Tennessee Walking Horse gelding named Strolling Jim for $350.
[5] Strolling Jim was soon sold to Colonel C. H. Bacon of Loudon, Tennessee, but was left in training with Carothers so he could be exhibited in shows over the summer.
[5] In 1942 Carothers rode the mare Melody Maid, owned by Mr. and Mrs. Frank Rambo of Fayetteville, Tennessee, to a World Grand Championship.