Jon Lester earned his third win of the season on Monday, holding the Mets to three runs in six innings.
Jon Lester picked up his second win of the season on Wednesday, allowing four runs (one earned) in seven innings against the Cardinals.
Jon Lester registered his first victory as a Cub on Friday, spinning seven shutout innings in a 1-0 win over the Brewers.
Jon Lester racked up 10 strikeouts over six innings in a no-decision against the Reds on Friday.
Jon Lester surrendered three runs on six hits in his 5 1/3 innings of work against the Padres on Sunday.
Jon Lester continued to struggle, allowing six runs in six innings in a no-decision Monday, but the Cubs were still able to win against the Reds.
Jon Lester struggled in his Cubs debut on Sunday night, allowing three runs on eight hits over 4 1/3 innings in a losing effort against the Cardinals.
Jon Lester (arm) threw 54 pitches Thursday in a minor league game.
Jon Lester (arm) is expected to throw 60 pitches Thursday in either a minor league game or a B-game.
Jon Lester (arm) is scheduled to throw a side session on Monday.
Jon Lester's scheduled start on Saturday has been pushed back due to a "dead arm" period.
Jon Lester was smacked around by the Padres in Monday's start, serving up six runs in 3 1/3 innings.
Jon Lester was exquisite again on Wednesday, shutting out the Dodgers over three innings.
Jon Lester dazzled in his Cubs debut on Friday, striking out three over two scoreless innings against the Reds in Cactus League action.