In the top of the fourth, Pablo Sandoval led off against Mat Latos. Here's what happened on Latos's third pitch:
Textbook.
Three pitches later, Sandoval grounded out to first. Next, Latos retired Buster Posey on a fly to center. Hunter Pence reached on an infield hit -- a higher chopper up the middle that Brandon Phillips could only put in his pocket -- but Latos got out of the inning by striking out Brandon Belt with a full-count fastball.
So we're still scoreless in the bottom of the fourth.