Send us Fan Mail In this Triple Block Heads volleyball podcast episode, Frank, Marc, and Makani discuss the two-libero system: its origins from the late-1990s libero rule, adoption in men’s NCAA (2012), later adoption in women’s NCAA, and newer rule changes allowing more flexibility between sets. They outline club and higher-level strategy uses, including splitting duties between serve-receive and defense specialists, using a libero jersey for a high-impact server to save substitutions, and u...