Strip away the booing, and the "Yoooooouk"-ing, and all the other background clatter that filled Fenway Park in the fourth inning last night, and only one thing remained — Jon Lester laid another egg. If Kevin Youkilis has been reborn since his June 24 liberation from the Red Sox (and four home runs in 82 plate appearances with Chicago make him look decidedly more spry), the same old Lester returned from the All-Star break. He continued his stunning regression from a top-of-the-rotation workhorse to a middling mudder.