Lester (4-0) went seven innings, retiring 11 in a row at one point and 12 of the last 13 he faced. He gave up the four Baltimore hits and won his third game in as many starts.
Boston won for the sixth time in seven games, while Baltimore lost at home for the 11th straight outing -- equaling a franchise record established 20 years ago.
The setback was charged to Daniel Cabrera (9-15), who gave up three runs on six hits in 3 2/3 innings.
Notable deaths of 2014 [PHOTOS]
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