The Padres signed first rounder Joe Ross for $2.75MM according to Jim Callis of Baseball America (on Twitter). Wasserman Media Group represents the high school right-hander, the 25th overall pick in this year's draft. The California native had committed to UCLA, which produced two 2011 first rounders, top pick Gerrit Cole and third overall selection Trevor Bauer.
You can keep track of which top picks have signed with MLBTR's list.