Best known in his brief tenure with the Giants for bombing the bullpen with deadly gas, Jean Machi has been optioned by the club to Triple-A Fresno. Creating awkward situations with Jose Mijares might have been the only thing Machi did wrong with the Giants, however. The right-hander surrendered just two runs in nine relief appearances. The Giants, though, did not have any room after Mijares was recalled from the bereavement list on Tuesday. So back to the minors Machi goes. But first the Fresno Grizzlies need to stock up on air fresheners and air purifiers.