What is "sporting blood"

Sporting Blood is a 1931 American MGM sports drama film directed by Charles Brabin. The film stars Clark Gable (in his first starring role), Ernest Torrence and Madge Evans.

'Sporting Blood ' is a 1940 American drama film, directed by S. Sylvan Simon for Metro-Goldwyn-Mayer. It stars Robert Young, Maureen O'Sullivan, and Lewis Stone.