Carson Whisenhunt overcame a rocky start as he allowed four runs over five innings in his major-league debut, but the Giants’ losing streak hit four games as they fell to the Pittsburgh Pirates 6-5 on Monday night at Oracle Park. With Thursday’s trade deadline looming, San Francisco has lost 10 of its last 12 games.

With a 5-3 loss on Sunday evening, the Giants were swept by the New York Mets. They dropped to 54-52 on the season, falling three games back of the final Wild Card spot. They’ve lost seven of their first nine games in the second half, and nine of their last 11 going back to the first half.