Junichi Tazawa finished the inning, and Lackey's win was secure.
"I wanted to stay in there. I wanted to get that last out in the inning," Lackey said. "But the bullpen guys shut it down. It was a great team win for a great team."
Lackey allowed one run in 62⁄3 innings to help the Red Sox beat the St. Louis Cardinals 6-1 in Game 6 of the World Series on Wednesday night and clinch their third championship in 10 years.
Lackey, who also won Game 7 of the 2002 for the Anaheim Angels, is the 11th pitcher in baseball history to win two World Series clinchers, and the third to do it with two different teams.
According to STATS, Lackey joins Jimmy Key (with Toronto in 1992 and the Yankees in '96) and Catfish Hunter (with Oakland in '72 and the Yankees in '78).
'If it stays fair'
Carlton Fisk has been waiting almost 40 years for his chance.
The Hall of Fame catcher, who famously waved his fly ball fair for the winning home run in Game 6 of the 1975 World Series, threw out a ceremonial first pitch before this year's sixth game. The Red Sox took a 3-2 lead in the Series into Wednesday night's game against the St. Louis Cardinals.
"They've lost two and this is the sixth game, so they can win tonight," Fisk told reporters before donning a fake beard to make his first pitch. "That would be great."
The 62-year-old Fisk batted .269 with 376 regular-season homers in a 22-year career with the Red Sox and White Sox.