Father of stabbed Dodgers fan calls for witnesses - Article Photos 14/14

Robert Preece, left, father of fatally stabbed Los Angeles Dodgers fan Jonathan Denver, and Rob Preece Jr., center, hug family friends before a news conference outside AT&T Park before the Giants' baseball game in San Francisco, Sunday, Sept. 29, 2013. Jonathan Denver, 24, was fatally stabbed Wednesday during a melee following the Giants' game against the Los Angeles Dodgers. (AP Photo/Tony Avelar)