In the fifth, Moore got stung by a fielding error when center fielder Steven Souza Jr. dropped a fly ball that teed it up for Dustin Pedroia's two-run single. Both runs were unearned.
Porcello allowed one run on six hits to pick up the win and move to 11-2 on the season and 8-0 at Fenway Park. Moore gave up two earned runs in six innings to take the loss and fall to 5-6.
MOMENTS THAT MATTERED
Walk to 0-2 blues: Moore had a 1-0 lead after three innings before he walked Pedroia to start the Red Sox fourth.