BOSTON -- Adam Jones continued his torrid start to the season Sunday with four more hits, including his fifth homer, and tied a career-high with five RBIs to lead the Baltimore Orioles to an 8-3 victory over the Boston Red Sox.

Jones, who leads all of baseball with a .457 average and has 15 RBIs, belted a two-run homer in the first inning on Boston starter Rick Porcello's 12th pitch of the afternoon, and later smacked a three-run double to knock Porcello from the game. The center fielder also added a pair of singles as the Orioles pounded 15 hits to win for the fourth time in five games.

Second baseman Ryan Flaherty hit a solo homer and designated hitter Jimmy Paredes had three singles for Baltimore.

Left fielder Hanley Ramirez had a three-run homer for the Red Sox, losers of three of their last four.

Baltimore's Miguel Gonzalez (2-1) allowed three runs on five hits in five innings. He struck out five, walked four and yielded just three hits -- all singles -- after the first inning.

Jones put Baltimore on top early, crushing a 0-1 fastball from Porcello over the Green Monster in left field, but Ramirez responded with his fifth of the season in the bottom half to stake Boston to a 3-2 lead.

Flaherty tied it with a two-out shot to straightaway center in the second.

Porcello (1-2) loaded the bases in each of the fourth, fifth and sixth innings, escaping unharmed only once by inducing a 1-2-3 double play in the fourth.

He wasn't as fortunate going forward.

Right fielder Travis Snider's RBI single and third baseman Manny Machado's sacrifice fly gave Baltimore a 5-3 edge in the fifth, and Jones' bases-clearing double in the sixth made it 8-3, ending Porcello's afternoon.

Porcello (1-2) labored through his worst start in a Red Sox uniform, surrendering eight runs on 12 hits in five-plus innings. He struck out six and walked three.

Boston designated hitter David Ortiz was ejected by home plate umpire John Tumpane in the bottom of the fifth for arguing a checked swing on a 1-1 pitch. Tumpane, who took over for Paul Emmel in the bottom of the fourth when Emmel left the game for undisclosed reasons, tossed the slugger from the game almost immediately.

NOTES: Boston 2B Dustin Pedroia wasn't in the starting lineup after going 0-for-7 in the first two games of the series. He was replaced by Brock Holt, who came in batting .579 with five RBIs in the six games he has played. ... Orioles RHP Miguel Gonzalez entered the game with a 4-1 record and 2.56 ERA in six career starts against the Red Sox. ... Baltimore LHP Wei-Yin Chen (0-0) will oppose Boston RHP Justin Masterson (1-0) in the finale of the four-game series Monday in an 11:05 a.m. ET start on Patriots' Day, a Massachusetts and Maine holiday celebrating Paul Revere's ride and the battles of Lexington and Concord in 1775. Monday also is the running of the Boston Marathon.