Bill Greene/Globe Staff

Red Sox manager John Farrell congratulated Daniel Nava after the win.

Jim Davis/Globe Staff

Daniel Nava (left) and Jacoby Ellsbury celebrated after the final out of the game.

Jim Davis/Globe Staff

Daniel Nava reacted after hitting a three-run home run over the Green Monster to break a scoreless tie in the seventh inning.

Bill Greene/Globe Staff

Nava was greeted by happy teammates and fans after his home run.

Bill Greene/Globe Staff

Red Sox closer Joel Hanrahan got the save after giving up a run in the ninth inning.

Daid L. Ryan/Globe Staff

Fenway Park was packed for the home opener against the Orioles under blue skies.

Elise Amendola/Associated Press

Steve Pearce struck out in the seventh inning.

Bill Greene/Globe Staff

Fans cheered Red Sox starting pitcher Clay Buchholz after the seventh inning.

Jared Wickerham/Getty Images

Clay Buchholz threw a pitch to Nate McLouth of the Orioles in the first inning at the Fenway home opener.

Stan Grossfeld/Globe Staff

Jacoby Ellsbury reacted after flying out in the third inning.

Jim Davis/Globe Staff

Clay Buchholz threw to Mike Napoli at first base as Nate McLouth got back to the bag safely.

Jim Davis/Globe Staff

Red Sox pitchers John Lackey (left) and Andrew Bailey (center) greeted Jackie Bradley, Jr. during pre-game player introductions.

Jim Davis/Globe Staff

The Jimmy Fund Chorus sang in the outfield before the game.

Jim Davis/Globe Staff

Red Sox second baseman Dustin Pedroia chatted with owner John Henry in the dugout before the game.

Stan Grossfeld/Globe Staff

Clay Buchholz threw a pitch in the first inning as the Red Sox took on the Orioles in the home opener at Fenway.

Jim Davis/Globe Staff

Jon Lester was all smiles in the dugout before the start of player introductions.

Stan Grossfeld/Globe Staff

The Red Sox and Orioles lined the field prior to the home opener at Fenway Park.

Jim Davis/Globe Staff

Jim Rice hugged a smiling Jon Lester following the ceremonial first pitches, as former Red Sox players looked on.

Dina Rudick/Globe Staff

"Big League Brian" Dwyer juggled pins on Yawkey Way.

Dina Rudick/Globe Staff

Matt McClelland of Warwick, R.I. (left), and Keith Couto, of Rumford, R.I., dug into sausage sandwiches.

Dina Rudick/Globe Staff

Lorriane Vallee of Sutton got her face painted before the game.

Jim Davis/Globe Staff

Blue skies and green grass were in abundance as the Red Sox took batting practice before the home opener against the Orioles.

Stan Grossfeld/Globe Staff

Fans waited to enter as the doors to Fenway opened on Monday afternoon.

Jared Wickerham/Getty Images

Fans filed into Fenway Park prior to the home opener between the Orioles and Red Sox.

Bill Greene/Globe Staff

Fans enjoyed the weather on Landsdowne Street before the game.

Jim Davis/Globe Staff

Orioles general manager (and former Red Sox GM) Dan Duquette talked with former Red Sox rightfielder Dwight Evans.

Jim Davis/Globe Staff

The Red Sox returned to Fenway Park in first place after a 4-2 season-opening road trip.

Bill Greene/Globe Staff

Fans Kenny Runge and Nick Freehling watched Orioles batting practice from the Green Monster.