(Reuters) -Melissa Jefferson-Wooden won her second Grand Slam Track title on Saturday, clinching the women's short sprints group in Miami, while Briton Josh Kerr took the men's short distance group after a rocky start to the season.

The novel circuit continued its second of four meets in its inaugural season at the Ansin Sports Complex, as it bids to upend business-as-usual in track with super-sized purses and an enviable roster of decorated talent.