ARLINGTON -- Rangers' left-hander Matt Harrison came out of his last start on Saturday against the Angels with lower back pain and hasn't been back on the field for the last two days while undergoing treatment.
Harrison is still scheduled to make his next start in Seattle on Thursday. If he isn't able to go, the Rangers aren't sure which direction they will go, and options are limited.
"We're not very deep right now," general manager Jon Daniels admitted. "We could use Derek Lowe out of the bullpen and Justin Grimm [at Round Rock] is on the [40-man] roster."
Harrison has started the season 0-2 with an 8.44 ERA for 10 2/3 innings, losing to both the Astros and Angels.
Borbon's fate to be decided on Tuesday
ARLINGTON -- For the last nine days, Julio Borbon has been in limbo, waiting to see where fate will take him next. On Tuesday, he'll find out.
"I'm excited for what's coming," said Borbon, who will likely either be part of a trade or designated for assignment on Tuesday, when the Rangers need to open a roster spot to make room for No. 5 starter Nick Tepesch. "I don't know what it is, but I'm looking forward to it."
The Rangers kept Borbon, a third centerfielder coming out of Spring Training, to buy time, hoping they might find a deal for him. So far, that hasn't happened.
"I really don't know what's going on," Borbon said. "I've heard rumors, but nothing's been solidified."
Borbon hit .317 (19-60) in Spring Training, including 10-for-25 in his last 12 Cactus League games. The Rangers expect to lose him if they have to put him on waivers, but they'll have 10 more days to trade him, release him or outright him to one of their Minor League affiliates.
With rookie Leonys Martin and Craig Gentry splitting center field duties, the Rangers have no room to keep Borbon.
Darvish not expected to miss time with blister
ARLINGTON -- The blister that prompted Rangers manager Ron Washington to lift starter Yu Darvish after just five innings on Sunday didn't affect him early in the game and is not expected to be a long-term problem.
"We'll take care of it," Washington said before Monday night's series opener with Tampa Bay. "It came apart in the fifth. "He always wants to continue, but he doesn't have anything to prove to us, so we shut him down. He could have taken the ball and gone out there and probably got through the [sixth] inning, but maybe there would have been more damage."
Darvish is not expected to miss his next turn, which will come up again on Friday in Seattle.
Darvish certainly won't want to miss any April starts. He is undefeated in his Major League career in April with a 6-0 record and 2.12 ERA, the most wins of any major league pitcher in this month over the last two seasons. He's also tops in April strikeouts for the last two years with 53.
Texas acquires catcher Chirinos from Rays
ARLINGTON -- The Rangers acquired catcher Robinson Chirinos from Tampa Bay on Monday for a player to be named or cash considerations. To make room on the 40-man roster, left-handed pitcher Jeff Beliveau, currently pitching at Triple-A Round Rock, was designated for assignment.
Chirinos, 28, didn't play in 2012 after sustaining a concussion in Spring Training, but played half a dozen games in winter ball and went for 2-for-9 in Spring Training this year for the Rays. He was DFA'd on March 31, when the Rays set their roster. The Rangers immediately assigned Chirinos to Round Rock.
The deal marks the first trade between the Texas and Tampa Bay franchises.
• The Rangers started the season 4-2 and have been playing well, but David Murphy is convinced it can get even better. "I've seen us better," Murphy said. "I'd like to see one of those 15-hit games where we don't even need to hit any home runs. Just single, double, single, double, double ... put up a 5-spot early."
• Lance Berkman and Nelson Cruz are two of 10 players in the Majors who hit safely in their first six games.
• Ian Kinsler, who hit his third homer Sunday, has homered 14 times within a season's first six games, tied with Juan Gonzalez for most in Rangers history.
• After six games the Rangers were hitting .275 as a team, .275 against left-handed pitchers, .275 against right-handers and .275 with runners in scoring position.
Jim Reeves is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.