SCOTTSDALE, Ariz. -- The Giants on Friday sent four players who could rejoin them sooner or later to Minor League camp.
The club optioned right-handers Chris Heston and Cody Hall and outfielder Jarett Parker to Triple-A Sacramento, besides reassigning infielder Mitch Delfino to Minor League camp.
Heston recorded a 3.00 ERA in Cactus League action, making a trio of two-inning appearances. He could top Sacramento's starting rotation and has established himself as a candidate to ascend to the Majors if attrition strikes the Giants' rotation.
Hall, a reliever who pitched himself onto the 40-man roster with a strong performance at Double-A Richmond last year, yielded two runs in five innings (3.60 ERA) spanning his first five spring appearances before he allowed Arizona four runs in two-thirds of an inning last Tuesday. That hiked his ERA to 9.53. He's ranked as the Giants' No. 15 prospect by MLB.com.
Parker was briefly recalled by the Giants last August but didn't appear in a game. He hit .227 with four RBIs in 13 Cactus League games.
Delfino, a non-roster invitee to camp, impressed coaches during spring drills. He batted .273 with two RBIs in nine exhibition games.
The moves left the Giants with 41 players in camp.
Chris Haft is a reporter for MLB.com. Read his blog, Haft-Baked Ideas, and follow him on Twitter at @sfgiantsbeat. This story was not subject to the approval of Major League Baseball or its clubs.