===Opening Day, April 3 vs.
Pittsburgh=== Reigning AL Cy Young winner
Rick Porcello made his first opening day start of his career, going 6 innings, allowing three runs on six hits in the win. The Red Sox bats could only get one hit off of Pirates starter
Gerrit Cole through 4 innings but then strung together six 2-out hits.
Jackie Bradley Jr. started the rally with a triple of the right field wall,
Pablo Sandoval legged out an infield single,
Sandy León laid down a bunt down the third base line,
Dustin Pedroia with a single down the middle, which plated Pablo Sandoval,
Andrew Benintendi with a three-run shot in the Pirates bullpen and
Mookie Betts reached second on another infield single and a throwing error by the shortstop
Jordy Mercer.
Hanley Ramírez made the third out and Cole's day was over. Pittsburgh got to Porcello in the seventh, where he gave up three hits and three runs, two of them inherited by
Matt Barnes. Barnes eventually got out of the inning. Neither team would score in the remainder of the game and
Craig Kimbrel closed out the game on one hit and one hit batsman.
Opening Day lineup April April 3–6, vs. Pittsburgh In his Red Sox debut,
Chris Sale struck out seven Pirates batters in his 7 shut-out innings. He received no run support until a three-run walk-off shot by
Sandy León in the 12th inning. Game three of the series was postponed and rescheduled for April 13.
Red Sox won the series 2–0 (8–3 runs) April 7–10, in Detroit In the series opener,
Steven Wright gave up four runs in 6 innings. Down by four runs going into the eighth, the Red Sox put a five spot on the board, including a three-run shot by
Pablo Sandoval, only to have the bullpen give up two more runs to win it for the Tigers. In game two, Boston took an early 1–0 lead, but that's all they would get. Detroit scored four times against
Eduardo Rodríguez and dropped two games in a row. With several players already down with the flu,
Andrew Benintendi threw up during the sixth inning in the outfield but could finish the game.
Rick Porcello gave up eleven hits but the Tigers could only push four players across the plate. In late game heroics, Boston scored four times to take the lead in the eighth.
Craig Kimbrel gave up one run but eventually closed the game.
Chris Sale went 7 innings, striking out 10 Tigers and allowing only two runs in the final game of the series, but that was enough for Detroit. Boston only scored once on a bases loaded, nobody out situation against
Justin Verlander in the second inning.
Red Sox lost the series 1–3 (14–17 runs) April 11–12, vs. Baltimore Drew Pomeranz went 6 innings of one-run ball in his season debut. Boston up by one run, scored three runs each in the seventh and eighth inning to put the game out of reach. In the second game of the odd two-game series against a division rival,
Steven Wright was pulled after 1 innings, giving up 8 runs on as many hits. The bullpen allowed four more runs over the course of the game. A rally in the middle innings, where Boston scored 5 runs in three consecutive innings, fell way short.
Red Sox tied the series 1—1 (13–13 runs) April 13, vs. Pittsburgh In the makeup game from the opening series of the season,
Eduardo Rodríguez allowed two first innings runs before settling in. Down by two runs coming into the eighth, the Pirates allowed three men to reach with one out, two via base on balls.
Mookie Betts scored the go-ahead run from first on a
Hanley Ramírez double, but the close play at the plate was successfully challenged.
Xander Bogaerts eventually drove in Hanley and
Craig Kimbrel shut the door.
Red Sox won the series 1–0 (4–3 runs) April 14–17, vs. Tampa Bay Rick Porcello was shelled for 8 runs in innings, the most since April 19, 2015 vs. Baltimore. Down by 8 runs coming into the ninth, the Red Sox rallied for three, but that was all they could get. The doubles streak of
Mitch Moreland ended after seven consecutive games.
Chris Sale pitched another gem in his third start and won his first game of the season. He allowed just three hits and one run in seven innings, striking out 12 Rays batters. Moreland scored twice, on a solo shot in the second and a
Sandy León groundout, providing the only runs for Boston.
Drew Pomeranz didn't make it through the fifth with five allowed runs, but the Red Sox out-hit the Rays 17–7.
Pablo Sandoval ripped his team-leading fourth home run of the season onto the green monster. On
Patriots' Day, the Red Sox played their traditional 11 am game and quickly scored four runs in the first two innings, after Tampa Bay took a two-run lead in the first.
Steven Wright gave up three runs, one of them earned, in six innings of work. The bullpen kept the Rays off the scoreboard and
Craig Kimbrel struck out the side for his sixth save of the season.
Red Sox won the series 3–1 (18–19 runs) April 18–20, in Toronto Brian Johnson outpitched
Marcus Stroman in a game where both teams connected for 27 hits. The Jays rallied for three runs in the ninth, but came one run short.
Rick Porcello allowed three unearned runs but received no run-support and the Red Sox where shut out for the first time this season. In the rubber match,
Chris Sale pitched another great game with 8 shut out innings, striking out 13. The save streak of
Craig Kimbrel ended on 25 on a lead-off home run by
Kendrys Morales, he eventually got the win, striking out five of the seven batters he faced.
Mookie Betts drove in three in the tenth on a two-out double.
Red Sox won the series 2–1 (12–11 runs) April 21–23, in Baltimore The Red Sox where shutout for the second time in three games.
Dustin Pedroia had to leave the game in the eighth, after a controversial slide with his raised cleats into second base by
Manny Machado. The Red Sox could not hold on to their 2–0 lead in the second game. Baltimore scored four times in the fourth and
Steven Wright was pulled early.
Eduardo Rodríguez pitched six shut out innings, allowing only one hit. He was aided by six runs and the first 5-for-5 performance by
Andrew Benintendi of his career.
Matt Barnes was ejected in the eighth on would be retaliation pitch against Machado, which hit his bat just inches away from his head. Barnes was eventually suspended for four games.
Red Sox lost the series 1–2 (8–8 runs) April 26–27, vs. New York The first game of the would-be three-game series was rained out and rescheduled for mid-July. In both games
Rick Porcello and
Chris Sale were given virtually no run support. Both allowed three runs, two earned. Sale struck out ten, but allowed 8 hits. Down just 0–1, Sale was back on the mound for the ninth, in which he gave up three straight hits, before being pulled with no outs recorded.
Red Sox lost the series 0–2 (1–6 runs) April 28–30, vs. Chicago (NL) The bats came to life with the reigning World Series champion in town. Boston scored five in the first off
Jake Arrieta. The Cubs rallied in the seventh but came up short. An early 3–0 lead was lost in the seventh on account of two errors in the same play by the Boston defense.
Steven Wright started his last game of the season, he opted for season-ending surgery five days later. The Red Sox got to their former closer
Koji Uehara in the eighth inning, with the game being tied at two, for four runs.
Hanley Ramírez hit home runs in back-to-back games.
Eduardo Rodríguez pitched another good game with one run allowed over six frames.
Matt Barnes became the team's leader in pitcher wins with 3.
Red Sox won the series 2–1 (15–13 runs) Composite line score April {{Linescore| • Extra innings without runs are not displayed
May May 1–4, vs. Baltimore Mookie Betts got plunked by a 95-mph
Dylan Bundy fastball in the first game of the series, but no warnings were issued and there weren't any further actions by either team.
Rick Porcello gave up two runs in six innings. Baltimore scored three times in the 8th inning, aided by three Red Sox errors.
Chris Sale threw behind
Manny Machado in the first inning and both benches were warned. Orioles reliever
Donnie Hart threw a pitch at
Andrew Benintendi's head but was not ejected nor disciplined for his action. Sale picked up the win, allowing only three hits in 8 innings. He struck out 11.
Kevin Gausman was ejected in the second inning of game three, in which he hit
Xander Bogaerts with a 77-mph curveball. Later in the game,
Adam Jones was ejected for arguing balls and strikes with homeplate umpire
Sam Holbrook.
Drew Pomeranz became the first Red Sox starter with three wins in his 5 innings of work. The bullpen pitched a shutout and
Craig Kimbrel picked up his tenth save of the season, striking out the side on 12 pitches. In the final game of the series, emotions cooled down and there were no further retaliations.
Kyle Kendrick, in his first start for Boston, surrendered six runs in the loss. Baltimore connected for 17 hits.
Red Sox tied the series 2–2 (14–17 runs) May 5–7, at Minneapolis Matt Barnes gave up a walk-off home run to former AL MVP
Joe Mauer, after the Red Sox rallied for two runs in the ninth to tie the game.
Eduardo Rodríguez pitched six innings, giving up three runs on seven hits. The bats came alive in the second game of the series, scoring eight runs in the second inning. The bases were empty with two outs before
Chris Young started a rally with a solo home run. Nine batters reached base, eight of them via the hit and one of them on an error. Boston put three more runs on the board, including another home run by Young and by
Sandy León.
Rick Porcello went seven innings of one-run ball. In the rubber match, finally
Chris Sale received decent run support. Boston tagged the AL ERA leader, with 0.66,
Ervin Santana for three runs in the first inning, a
Dustin Pedroia solo home run and an absolute blast by
Andrew Benintendi with
Xander Bogaerts on first, which left the ballpark. After Boston extended the lead to four, Sale struggled in the fifth and the Twins tied up the game, only to give up a two-run home run to
Sandy León which barely left the park. Up by three in the eighth,
Matt Barnes gave up a home run and could not make an out. Lefty
Robby Scott got the out against the lefty batter but a run scored on the sacrifice fly. With the tying run on third and only one out,
Craig Kimbrel came in in a high-leverage situation and struck out both batters he faced. In a 39-minute top of the ninth, seven consecutive players reached base safely with one out, before
Deven Marrero grounded out. The inning was extended on a fielding error. Four more batters reached base safely, including three consecutive walks.
Chris Young, the 15th batter of the inning, became the third out. Except for Marrero, every hitter in the line-up reached base safely; ten runs came across the plate to score. Santana allowed six runs in the game, all of them earned. He allowed only three runs in his previous six starts combined. Sale extended his 10+ strikeout streak to six.
Red Sox won the series 2–1 (32–12 runs) May 9–11, at Milwaukee The Brewers tagged
Drew Pomeranz for six runs in four innings in the loss. Boston narrowed the gap to two runs in the fifth but
Heath Hembree allowed three more runs in the sixth.
Kyle Kendrick also allowed six runs in his start, a hole too deep for the offense to climb out of. Both teams collected 49 hits in the first two games combined. Coming into the game with a career ERA of 5.26 in day games, as opposed to his 3.36 ERA in night games,
Eduardo Rodríguez pitched a three-hit, one-run game over six frames. He was pinch hit for in the seventh. Boston left the go-ahead run stranded at third with nobody out in the top of eighth.
Craig Kimbrel was again summoned from the bullpen in a non-save situation, with the go-ahead run at first and one out in the bottom of the eighth. He struck out
Eric Thames, allowed an infield hit and the runner from second advanced to third on a wild pitch. Kimbrel ended the threat with another strikeout. In the top of the ninth,
Christian Vázquez walked and
Deven Marrero reached on an error.
Mookie Betts put three runs on the board with his fifth home run of the season. Kimbrel struck out the side on a total of nine pitches to secure the win—it was the third
immaculate inning in Red Sox franchise history.
Red Sox lost the series 1–2 (15–19 runs) May 12–14, vs. Tampa Bay Red Sox lost the series 1–2 (12–19 runs) May 16–17, at St. Louis Red Sox won the series 2–0 (11–7 runs) May 18–20, at Oakland Red Sox lost the series 1–3 (20–22 runs) May 23–25, vs. Texas Red Sox won the series 3–0 (26–12 runs) May 26–28, vs. Seattle Red Sox won the series 2–1 (9–5 runs) May 29–31, at Chicago Red Sox won the series 2–1 (21–13 runs) June July August August 3–August 6, vs. Chicago White Sox August 8–August 9, at Tampa Bay Rays On August 9, the Red Sox defeated the Rays, 8–2, to extend their winning streak to eight games. In the fifth inning,
Rick Porcello struck out the side on nine pitches; it was the fourth
immaculate inning in franchise history and second of the season, following one by
Craig Kimbrel on May 11.
August 11–August 13, at New York Yankees August 14, vs. Cleveland Indians August 15–August 16, vs. St. Louis Cardinals August 18–August 20, vs. New York Yankees August 21–August 24, at Cleveland Indians August 25–August 27, vs. Baltimore Orioles This three-game series was played on the inaugural
Players Weekend, when MLB players are allowed and encouraged to put nicknames on the back of their uniforms. For the opening game, the nicknames used by Boston's starting lineup were as follows: The August 25 game, a 16–3 win by Baltimore, was notable for the Red Sox making an illegal player re-entry late in the game, which went undetected at the time. With the Orioles leading by 13 runs, position player
Mitch Moreland pitched the ninth inning for Boston, with
Hanley Ramírez entering the game to play first base, resulting in loss of the
designated hitter. Ramírez should have taken
Chris Young's position in the batting order (seventh). However, with one out in the bottom of the ninth inning, Young batted in his (former) seventh position in the order, which is an illegal player re-entry. Young hit a single, and the game ended three batters later, with Young's hit having no bearing on the outcome of the game. The illegal player re-entry appears to be unique in MLB history.
September / October Sign stealing revelations In September 2017, the Red Sox were fined for their role in
stealing signs from the
rival New York Yankees. On February 4, 2020,
MLB Network journalist
Peter Gammons reported that former Red Sox player
Chris Young, who left the Red Sox following the 2017 season, told him that Young was the mastermind of the Red Sox'
Apple Watch scheme, telling him "I started the whole Apple Watch thing. I got it from when I was with the Yankees." In reporting Young's denial, SNY also revealed that Young had in fact been interviewed by MLB officials as part of the 2017 investigation against the Red Sox and that multiple sources told the sports news agency that Young was in fact a leader of the team's 2017 Apple Watch scheme. ==Postseason==