Daniel Flores, a 17-year-old prospect for the Boston Red Sox, died of cancer on Wednesday, the team announced. Flores, who was one of the team's top catcher prospects, was in Boston receiving treatment and died as a result of complications from that treatment. Flores signed with the Red Sox in July and was highly regarded by scouts. The switch-hitter from Venezuelan was ranked No. 2 among international amateur prospects in 2017 thanks to his elite defensive ability behind the plate and above-average power.