Giants starter Johnny Cueto discusses setback, when he could pitch again

PHOENIX, AZ – APRIL 17: Starting pitcher Johnny Cueto #47 of the San Francisco Giants pitches against the Arizona Diamondbacks during the first inning of the MLB game at Chase Field on April 17, 2018 in Phoenix, Arizona. (Photo by Christian Petersen/Getty Images)ST. LOUIS — The Giants remain optimistic that Johnny Cueto will take the mound for the team before the end of the 2019 season.

Debuting against the Dodgers this weekend, however, is now out of the question.

Manager Bruce Bochy revealed Tuesday that Cueto is dealing with back tightness that will force him to push back his first start of the year. Cueto was lined up to pitch in Los Angeles this weekend, but he will now throw a bullpen…