Jon Lester led the Red Sox to World Series glory last fall, helping Boston top the Cardinals in six games.

Jim Davis/Globe Staff

Jon Lester led the Red Sox to World Series glory last fall, helping Boston top the Cardinals in six games.

Lester made his major-league debut in June 2006. Here, he’s shown in a game from July 2006.

Jim Davis/Globe Staff

Lester made his major-league debut in June 2006.

Despite a cancer diagnosis in 2006, Lester returned to pitch the clinching game of the 2007 World Series against the Rockies.

Stan Grossfeld/Globe Staff

Despite a cancer diagnosis in 2006, Lester returned to pitch the clinching game of the 2007 World Series against the Rockies.

The next season brought more accolades for Lester, including a no-hitter against the Royals on May 19, 2008.

Jim Davis/Globe Staff

The next season brought more accolades for Lester, including a no-hitter against the Royals on May 19, 2008.

Lester has gone 10-7 with a 2.52 earned run average in 21 starts this season.

Chris O’Meara/Associated Press

Lester has gone 10-7 with a 2.52 earned run average in 21 starts this season.

At 30, Lester leaves the Red Sox at the top of his game.

Jim Rogash/Getty Images

At 30, Lester leaves the Red Sox at the top of his game.

Jon Lester traded to Oakland

Lester is the centerpiece of a deal that also sends Jonny Gomes to Oakland, while Boston receives All-Star outfielder Yoenis Cespedes.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2014/07/31/BostonGlobe.com/Sports/Images/2014-07-15T041818Z_1639108169_NOCID_RTRMADP_3_MLB-HOME-RUN-DERBY[1]--90x90.jpg Meet Yoenis Cespedes, new Red Sox outfielder

Cespedes, the two-time defending Home Run Derby champ, brings a big bat and a powerful right arm to Fenway Park.

The dark nights continued for the Red Sox as they lost again, swept by the Blue Jays on Wednesday.

Christopher L. Gasper

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The woman allegedly stole a firefighter’s wallet from his station while he was out battling a blaze in the town.

Substance abuse bill keeps coverage for inpatient care

State lawmakers have reached an agreement on a final version of a bill intended to address the opioid addiction crisis.

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A tweet apparently written by a director of the company described protesters as “much better looking than I remember.”

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The fractured grocery chain said it would begin replacing employees unless they returned to their jobs next week.

Deaths top 700 in deadliest Ebola outbreak in history

Ebola has been blamed for more than 729 deaths in four West African countries this year.

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The authenticity of the adaptation, which wraps filming in Boston Friday, is evident in moments big and small for Dick Lehr.

Opinion

Alex Beam

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Le Carré spotlights the Cold War, and by extension the US role — and principles — that were part of it.

BetaBoston

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The 140-character social network is riding high after a stronger than expected quarter.