The San Francisco Giants sent right-handed pitcher Eric Hacker to Class AAA Fresno after taking a 5-3 loss to the visiting San Diego Padres on Friday night.
San Francisco recalled reliever Steve Edlefsen from Fresno on Saturday morning, according to CSN Bay Area.
Hacker was brought up to make one start so the rest of the staff could have its regular rest. Tim Lincecum, today's scheduled starter, would have had to pitch on three days' rest on Friday.
Hacker allowed three runs in six innings against the Padres.
Edlefsen gives the Giants a seven-man bullpen to go with their five-man starting rotation.
Edlefsen had a 9.53 ERA in 11 1/3 innings after he was called up in August of last year.