Rob Nelson (born June 5, 1978) is a weekend morning anchor and weekday reporter at WABC-TV. Nelson co-anchored the overnight news programs World News Now and America This Morning on ABC with various co-anchors, including Vinita Nair, Peggy Bunker,Tanya Rivero, Yunji De Nies, Paula Farris,Diana Perez and frequent fill-in Sunny Hostin. Nelson left on March 15, 2013. He originally joined ABC on July 12, 2010. John Muller succeeded Nelson as co-anchor of "World News Now"; Nelson's enormous popularity led to him becoming a regular fill-in for Muller. In January 2014, Nelson joined WABC-TV as co-anchor of the weekend morning newscasts, replacing Phil Lipof.