BALTIMORE -- For the first six weeks of the season, you didn't have to look hard to find the positives with Jon Lester. Right from Opening Day, when he out-dueled CC Sabathia and ripped off six decisions in a row in the win column, Lester's strengths were obvious: he was driving the ball down in the strike zone, limiting walks and showing signs that he had returned to the form he showed between 2008 through August of 2011, when he was one of the best lefty starters in the game. But Sunday, after Lester was tagged for five runs on eight hits and was done after five innings, you had to work a little harder for the silver linings. * Yes, there was the improved control. After walking a career-high seven in his last outing and 14 total in his last three starts, Lester didn't walk a single batter.