BOSTON — The Red Sox have lost four straight games. They have scored 10 runs in those four games, five of them in one inning on Sunday night.

The offense has been shaky, and Monday night, the team lost slugger Hanley Ramirez to a shoulder injury that doesn’t appear too serious.

But the pitching continues to be the main problem.

Clay Buchholz wasn’t horrible in Monday night’s 5-1 loss. But he did put his team in an early 4-0 hole before going on to work 6 1/3 innings. When the smoke cleared, he had allowed five runs, the 10th time in 26 games the Boston starters have allowed at least five runs.

Buchholz is 0-4 since winning on opening day. His ERA is a robust 6.03.

“We can’t think that going into every game we’re going to put seven or eight runs up — that doesn’t happen in this league,” said manager John Farrell. “We have to rely on a starting group that pitches more consistently.”

Tuesday night, it’s Rick Porcello’s turn. He’s coming off a strong start, but consistency hasn’t been a strong suit for this rotation.

Ramirez day to day

Ramirez suffered a left shoulder sprain that forced him out of Monday night’s game in the first inning. Ramirez, learning to play a new position, was injured as he ran down a drive by Tampa’s James Loney. Ramirez had the ball in his glove but it popped out when he ran, glove-first into the padded barrier. He appeared dazed and didn’t react to the loose ball right away. After throwing it back in, with Loney at second, Ramirez bent over with his hands on his knees. Red Sox personnel made their way out to him and Ramirez, who has a long history of injuries, including two procedures on that shoulder, walked off holding his left arm tight against his body. After the game, manager John Farrell said, “He’s day to day right now.”

LF Allen Craig, who replaced Ramirez, continues to flounder at the plate. He did have a hit Monday, the 500th of his big-league career. But he is batting just .146.

Ortiz at two hearings

DH David Ortiz had two hearings Monday, according to WEEI.com. One was to appeal his recent one-game suspension making contact with umpire John Tumpane, the other was for the $5,000 fine he received for smashing a dugout phone in Baltimore with a bat. As far as his contact with Tumpane, Ortiz told WEEI, “I have to watch that video to see what point I touched him because I don’t remember, to be honest with you. I don’t really remember. And I wasn’t even arguing with him. I was talking with the third-base umpire. If it happened, I don’t know when it happened and I didn’t try that because trust me, I know. It might be one move that I made or whatever. But I don’t know.” A ruling on both is expected soon.

Roster moves

INF Luis Jimenez, claimed off waivers Sunday, has been added to the Red Sox roster. The club sent RHP Dalier Hinojosa back to Triple-A Pawtucket. He went 1-for-15 with a walk in 15 games for the Brewers this season.

RHP Dalier Hinojosa was sent back to Triple-A Pawtucket after he made his major-league debut Sunday night, working the final 1 2/3 innings. He pitched himself into trouble with a hit batter and two walks in the ninth but escaped to keep the game within reach.

Injury notes

— Catcher Ryan Hanigan (displaced fracture to the fifth metacarpal on his right hand) was moved from the 15- to the 60-day disabled list Sunday. He was injured Friday and had right hand surgery the next day.

— Right fielder Shane Victorino (right hamstring tightness) went on the 15-day disabled list retroactive to April 23. He is set to begin a rehab assignment this week.

Challenges elude Cash

Kevin Cash is going to have to do something about these challenges.

Monday night, the rookie manager failed for the 11th straight time in his young managerial career, tying Mike Metheny’s major league record.

Afterward, he could joke about it — his team defeated the Boston Red Sox 5-1 in the opener of a three-game series.

“That was something we were really trying to go after at the start of the season,” said Cash. “I’m glad that we’ve successfully done that.”

He said he had some back and forth with Red Sox manager John Farrell, an old pal in the other dugout.

“I’ve kind of explained that we’re not very good at it. I’m not very good at it,” he said. “That inconclusive just gets me. I’m not sure what that is.”

The call was on right fielder Steven Sousa Jr. trying to steal second base in the fourth inning — and the replay was inconclusive. By that time, the Rays (14-12) had already built a 4-0 lead that became 4-1 but was in the capable right hand of Jake Odorizzi.