Jon Lester curbed the Kansas City Royals on three hits for six-plus innings and Jason Varitek tripled for the first time in more than four years as the Boston Red Sox won 6-1 on Sunday.

Carl Crawford and Darnell McDonald hit solo home runs for the Red Sox.

Lester (13-7) has allowed two runs and six hits in 13 innings in his past two starts to beat Kansas City and Tampa Bay. He is 5-1 with a 1.30 ERA in seven career starts against the Royals.

Varitek's two-out triple rolled to the right-center fence, allowing Jed Lowrie to score in the fifth to break a scoreless deadlock. Lowrie led off the inning with a single and moved to second on a Crawford ground out. Varitek's triple was his first since June 24, 2007 at San Diego off Jake Peavy.