Whisenhunt (Giants’ No. 11 prospect) recalled to face Rockies; Walker optioned

SAN FRANCISCO – When Carson Whisenhunt was optioned to Triple-A Sacramento following a strong outing on June 17 in Atlanta, it seemed logical to imagine the left-hander would wind up back in the Majors soon. And sure enough, the Giants’ No. 11 prospect per MLB Pipeline is back in the Bay, having been called up from Sacramento to start Thursday night’s series opener with the Rockies. In a corresponding move, reliever Ryan Walker was optioned to Sacramento. Gigantes Aloha Shirt Giveaway Day is Saturday before Giants-Rockies Whisenhunt, 25, earned Pacific Coast League Pitcher of the Month honors in May. Overall,…