The Red Sox shut out the Giants 4-0 to open their series at Fenway Park.
Cooper Criswell earned his second victory of the season after striking out four batters over five scoreless innings.
Rob Refsnyder drove in a pair of runs, and Wilyer Abreu went three for four with a double and RBI triple.
Boston is now 17-and-13. Logan Webb was charged with his second loss of the year after allowing four runs on nine hits over three and two-thirds innings pitched.
The Giants managed to record just four hits as a team.
San Francisco is now 14-and-16.
(Photo by Jaiden Tripi/Getty Images)
Photo: Jaiden Tripi / Getty Images Sport / Getty Images