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4/25/2014 10:15 P.M. ET

Choo better but not ready

SEATTLE -- Outfielder Shin-Soo Choo has reported significant improvement in his sprained left ankle but not enough to get back in the lineup. The Rangers are still giving Choo extra time to get healthy, but there is still a possibility he could go on the disabled list.

"Nobody wants to go on the disabled list," Choo said. "But I don't want to do anything to hurt the team by holding up the roster. I'm positive I will feel better before 15 days. Will it be a couple of days more? I don't know."

Choo said he still feels pain when he runs. He's able to walk, take batting practice and play catch, but the pain is there when he pushes off his foot while running. He took batting practice in the cage on Friday without any problem and will try to hit on the field Saturday. Even though he is still on the active roster, manager Ron Washington said he won't use him as a pinch-hitter.

"He's just starting to move around," Washington said. He's getting there."

The Rangers have an extra player on the bench. But that will likely change on Sunday with Matt Harrison ready to be activated off the disabled list. The Rangers could make room for him by putting Choo on the disabled list or sending infielder Luis Sardinas back to Double-A Frisco.

Beltre activated, Kouzmanoff lands on disabled list

SEATTLE -- The Rangers placed third baseman Kevin Kouzmanoff on the disabled list with a herniated disc in his lower back and activated Adrian Beltre off the disabled list to take his place on Friday.

Kouzmanoff has a history of back trouble stemming from falling into a dugout chasing a foul ball in the 2004 Arizona Fall League. He flew back to Texas earlier this week to see Dr. Drew Dossett and received an epidural injection. The plan is to see how he responds to the injection over the weekend before deciding if surgery is needed.

Kouzmanoff was hitting .362 with two home runs and 10 RBIs in 13 games since replacing Beltre, who has been sidelined with a strained left quad muscle.

The Rangers have not made a move with outfielder Shin-Soo Choo, who is sidelined with a sprained left ankle, but he is not in the starting lineup on Friday against the Mariners. Michael Choice was in left field and batting leadoff for the third consecutive game.

The Rangers also lost pitcher Hector Noesi to the White Sox on a waiver claim. He was designated for assignment earlier this week.

Wash heard as transfer rule is changed

SEATTLE -- Rangers manager Ron Washington's voice was heard. The transfer rule has been changed, effective Friday night all through Major League Baseball.

"It's what it should have always been," Washington said. "I said Major League Baseball would get it right and they did. Everything wrong with the review, they are going to get right because everybody wants to get it right. Other things, they'll get it right too."

The issue was what happens when a fielder loses control of the baseball when "transferring" it from the glove to the throwing hand. In the past, either on a catch or a play at a base, it was considered an out if the fielder clearly caught the ball and then lost it trying to make a throw. After replay was introduced, those outs started becoming safe calls.

Washington was quite vocal in expressing his displeasure and the Playing Rules Committee agreed with him. The ruling will be enforced as it has in the past prior to replay.

"I don't think I take any joy in that," Washington said. "I did what was right for me and my club. Other managers complained. They want to get it right. That's what I said all along. Some of these things may take a while, some may be expedited. They got this right."

The Rangers had two plays go against them on April 7 against the Red Sox and April 14 against the Mariners. Washington was ejected from the game after the second call. The ejection comes with a $500 automatic fine. There will be no refund.

"That money is already in charity," Washington said.

Martinez goes to the bullpen

SEATTLE -- Rookie right-hander Nick Martinez is staying in the Major Leagues. With Pedro Figueroa going on the disabled list with a torn ligament in his right elbow, the Rangers have decided to keep Martinez in the big leagues as a long reliever rather having him continue to pitch every fifth day at Double-A Frisco.

"That was our intention but right now, with the injuries we have, we feel he can help us," manager Ron Washington said. "How long that will last, I don't know. He can give us innings."

Martinez started on Tuesday against the Athletics and threw 92 pitches. He probably won't be available until Saturday.

"I feel great about it," Martinez said. "The ultimate goal is to be in the big leagues. That's what I want, the opportunity to help the team. I don't know what the future holds for me. If I can get back up there as a starter, that's fine. If they need me in the bullpen, that's good too."

Martinez, who has a 4.09 ERA in his two starts with the Rangers, has made 58 starts and 17 relief appearances in the Minor Leagues.

Beltre feels for Kouzmanoff

SEATTLE -- Adrian Beltre was activated off the disabled list on Friday but he felt for Kevin Kouzmanoff, who is going to be sidelined for an extended period of time with a herniated disc in his lower back.

"I thought he was our best hitter in the last two weeks," Beltre said. "Power, production, hitting in the clutch, he was better than anybody could have expected. It's tough, we know how hard he worked to get back in the big leagues. You could see in Spring Training he wanted to get back and did everything he could. He did a great job for two weeks. It's sad to see a guy who worked so hard like that get injured."

Beltre was sidelined for two weeks with a strained left quad muscle. He said he has been ready to play for over a week but he's still going to be cautious, especially getting out of the batter's box and running the bases.

"Obviously for the next 10 days or so, I'm not going to force anything," Beltre said. "I want to make sure I'm good. Defense is not a problem but coming out of the box and trying to get that extra gear, I won't be pushing it for the next 7-10 days."

Worth noting

Robinson Chirinos was out of the lineup on Friday as J.P. Arencibia started at catcher. The Rangers are 10-2 when Chirinos catches, an .833 winning percentage that's the highest for a Major League player who has started at least half his team's games.

• Pitcher Hector Noesi has been claimed off waivers by the White Sox. Noesi was designated for assignment by the Rangers earlier this week. He pitched in three games for the Rangers and had an 11.81 ERA.

• The Rangers have activated pitcher Cody Buckel off the disabled list at Class A Myrtle Beach. Infielder Edwin Garcia has been promoted from Myrtle Beach to Double-A Frisco. Infielder Guilder Rodriguez has been promoted from Frisco to Triple-A Round Rock. Infielder Luis Mendez has been transferred from extended spring to Myrtle Beach.

T.R. Sullivan is a reporter for MLB.com. Read his blog, Postcards from Elysian Fields, and follow him on Twitter @Sullivan_Ranger. This story was not subject to the approval of Major League Baseball or its clubs.