Ellsbury was examined by team doctors yesterday after a CT scan and MRI taken in Tampa Wednesday night came back negative. The Sox’ medical staff will decide today whether to give Ellsbury one more imaging test just to make sure.

The disabled list remains a possibility, with Ellsbury feeling no relief from the soreness he has expereinced the last three days. While there was no refracture or new injury, according to a team source, Ellsbury remained out of the lineup for last night’s loss to the Royals.

While the Sox were in Tampa, Ellsbury expressed frustration in remarks to ESPN.com that the injury was misdiagnosed early — as a bruise rather than a break — but team sources said he later regretted making those comments.

“He’s really tender,’’ manager Terry Francona said before the game. “He’s been examined, and we’ve looked at all the pictures. All the medical people are trying to look at everything. We’ve got to get to the bottom of this; we’re not at the bottom of it.

“We don’t want to rush into putting him on the disabled list, but at the same time, he’s not ready to play because of the way he feels.’’

Ellsbury has played in three games since returning from a rehab assignment in Pawtucket and Portland, and seemed to be turning the corner. Doctors say it’s not unusual for soreness to accompany a rib injury after it has healed. It’s this soreness that Ellsbury is experiencing, and given that his game is speed and diving for balls in the outfield, it is difficult for him to get back on the field.

Francona has said that when Ellsbury is ready, he will be the center fielder and Mike Cameron will be in left field every other day.

This was the first time back at Fenway for West since the April series, when he told a New Jersey newspaper that the Red Sox-Yankees games had become “pathetic and embarrassing.’’

Asked yesterday about those comments and the controversy they stirred up, West said, “I told you, I can’t comment on that. I’ve been asked not to speak about it.’’

West put himself back in the news Wednesday when he ejected White Sox pitcher Mark Buehrle and manager Ozzie Guillen during a game at Cleveland. After West called Buehrle for a second balk, the pitcher dropped his glove to the ground in disgust, and Guillen came out, initially to protect his pitcher, though he was eventually kicked out for arguing.

After the game, Guillen made expletive-filled remarks about West, saying at one point, “Sometimes he thinks people pay to watch him umpire.’’ It was not the first time West has been accused of wanting to become part of the story.

Asked last night about the Cleveland incident, West said, “I’m not supposed to talk about it. I don’t know what the reaction is, and I’m really not concerned about it. I’m here to do a job.’’

Asked specifically about a response to Guillen, West said, “I really don’t have a response because that would just be opening up a can of worms that doesn’t need to be opened.’’

According to ESPN, Major League Baseball is investigating Wednesday’s incident.

Nick Cafardo can be reached at cafardo@globe.com. Michael Whitmer of the Globe staff contributed to this report.