Who’s the Next Mack Hollins? UNC Spring Practice Provides Springboard Posted Apr 7, 2015 Spring football practice can serve as a springboard to fall success. Carolina football saw that last season when unheralded walk-on receiver Mack Hollins took advantage of his offseason opportunities to transform into a difference-maker on game days. Who will be this year’s Mack Hollins? (Chapelboro.com)