Marco Scutaro watched Red Sox reliever Brayan Villarreal's 3-0 pitch sail into the glove of catcher Brian Ross with the bases loaded, the score tied and two out in the bottom of the ninth inning at AT&T Park in San Francisco Tuesday night, then trotted to first to complete a walk-off base on balls that gave the Giants a 3-2 win over the Red Sox.

 

The Giants had tied the game in the eighth when Shane Victorino elected to make a catch in foul territory on Buster Posey's fly ball instead of letting it drop, allowing Scutaro to score on the sacrifice fly.

 

Franklin Morales (2-1) came on for the ninth and loaded the bases on a single, a walk and a hit by pitch before Villarreal came in and threw four straight balls to Scutaro.

 

Brandon Belt finished a home run shy of the cycle and Joaquin Arias tripled in a run for the Giants, who evened the series at a game apiece.

 

The Red Sox dropped back into a tie for first place in the American League East with the Tampa Bay Rays.

 

Boston loaded the bases twice in the first inning but only came away with one run when Jacoby Ellsbury scored on Mike Carp's sacrifice fly to right. Victorino led off the third and lined a 3-2 fastball into the seats in left to double the advantage. The Giants cut it to 2-1 on Arias' triple in the fifth but could not get him home as second baseman Dustin Pedroia made two diving plays with the infield drawn in to keep the runner at third and shortstop Xander Bogaerts charged a high hopper and just got the throw across in time to highlight his major-league debut. Sergio Romo (4-6) worked a scoreless inning of relief to pick up the win.