 Whiteside attended Delta State University before being drafted in the sixth round of the Major League Baseball ( MLB ) Draft by the Baltimore Orioles . He played in their organization through 2007 , though he only played nine games in the major leagues with the Orioles , all coming in 2005 . He signed with the Minnesota Twins in 2008 but was released after playing for their Triple @-@ A team for a month . The San Francisco Giants then signed him , assigning him to the minor leagues . He was called up to be their backup catcher in May 2009 , and he caught Jonathan Sánchez 's no @-@ hitter on July 10 . In 2010 , he remained the backup catcher and was on the Giants ' roster when they won the World Series , despite not playing any playoff games . After an injury to Buster Posey in May 2011 , Whiteside split time catching with Chris Stewart for the rest of the year . He lost the role of backup to Héctor Sánchez in 2012 and appeared in just 12 games for the Giants during their second World Series @-@ winning season in three years . Following 2012 , Whiteside was claimed off waivers multiple times by different clubs before finally winding up with the Texas Rangers , who assigned him to their Triple @-@ A team in 2013 . In 2014 , he competed for a spot on the Cubs ' roster but was beaten out by John Baker and sent to the minors . In early 2015 , Whiteside decided to retire and currently serves as a coach on the Giants . 
