There are many ways to lose a baseball game. The Giants were clinging to a 2-1 lead with new closer Mark Melancon on the mound. With one out, Justin Turner singled off Melancon, then advanced to second on a wild pitch after Yasmani Grandal struck out for the second out of the inning.
Eric Thames has now hit seven homers against the Reds this season in five games.
The Giants ace had a second MRI on his injured shoulder Monday, but the timetable for his return is still unknown.