Rookie Chris Heston is next in line as the San Francisco Giants try to match a franchise record with a fourth consecutive shutout. The Giants are enjoying win streaks of five straight overall and eight in a row at home and send Heston to the mound Wednesday to complete a three-game sweep of the San Diego Padres. San Francisco (14-13) can match the franchise record set from June 25-28, 2012, if it posts another shutout. Heston, who is 1-1 with a 1.29 ERA in three home starts, has some tough acts to follow in the Giants' rotation.