Weaver continued his impressive performance, at one point lowering his ERA to 1.12 after six starts. He won his first nine decisions at the start of his major league career, tying the American League record set by Whitey Ford in 1950. Weaver recorded his first loss on August 24, 2006, when he lost to the Boston Red Sox, despite allowing only one earned run in seven innings pitched, a home run to David Ortiz. He finished the season with an 11–2 record and a 2.56 ERA and placed fifth in the American League Rookie of the Year Award voting.