Melvin shares encouraging Estrada hamstring injury update

The Giants received some encouraging news about second baseman Thairo Estrada's left hamstring injury, and it's possible that the 28-year-old could be back in the starting lineup as soon as Saturday. Estrada, who was removed from Wednesday's loss to the New York Mets, received treatment during San Francisco's off day Thursday and was at Oracle Park to do some hitting and fielding. Manager Bob Melvin indicated that Estrada could be ready to come off the bench for Friday's game against the Pittsburgh Pirates before the Giants insert him back into the starting lineup.