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8/25/2014 9:30 P.M. ET

Choo to have season-ending elbow surgery

SEATTLE -- Rangers outfielder Shin-Soo Choo is expected to undergo surgery to have a bone spur removed from his left elbow as early as Friday and will not play again this season. The Rangers called up outfielder Michael Choice from Triple-A Round Rock to replace him.

Choo has been bothered by elbow problems since Spring Training although he has been trying to play through both that and a sprained right ankle. The Rangers were planning to shut him down at the beginning of September but moved that up a week because he came down with the flu this past weekend and has been running a fever. He did not travel with the Rangers to Seattle.

The Rangers want him to get the elbow cleaned up because the recovery time is two months. They want him back at full strength by Nov. 1 so he can go through a full, normal offseason conditioning program. That's why they had targeted Sept. 1 as the shutdown date.

"It cleared up for the most part after Spring Training," general manager Jon Daniels said. "It bothered him on long throws and hard throws. He was aware of it. We want to get it completely cleaned up."

Choo, who signed a seven-year, $130 million contract as a free agent this offseason, finished his first season with the Rangers hitting .242 with 58 runs scored, 13 home runs, 40 RBIs, a .340 on-base percentage and a .374 slugging percentage. All batting, slugging and on-base percentages were his lowest since he began playing regularly in 2008.

"More than anything, the ankle played a big part early," manager Ron Washington said. "Once that got rolling, he couldn't stop it. In this game when things go south, it's hard to correct."

Washington still suggested that in some ways, Choo had a "strong" first season with the Rangers.

"With all the adversity, he didn't shut it down," Washington said. "He kept fighting. I admire the way he went about his business through all the adversity. It was tough but he didn't complain."

Clock ticking on Darvish's return this season

SEATTLE -- The chances of Yu Darvish pitching for the Rangers again this season are all but vanishing completely. General manager Jon Daniels admitted that the calendar is starting to work against the Rangers at this point.

Darvish, who is on the disabled list with mild inflammation in his right elbow, has still not resumed throwing. He last pitched on Aug. 9 and the longer he goes without throwing, the harder it will be for him to pitch again this season.

"The way we left it is that once he is [without symptoms], and cleared by Dr. [Keith] Meister, he'll get another MRI," Daniels said. "If that MRI is clear, we'll let him get back out there. But once a guy is down for three weeks, he's not going to go right back into a big league game. So the calendar is not working in his favor."

The Rangers arrived in Seattle with 33 games left to play in the season. Darvish did not accompany the Rangers to Seattle.

"I want to finish strong," Daniels said. "Nobody wants to lose. We're better when he is out there. But we're trying to step back and have perspective ... shame on me if this lingers into 2015. We have had a lot of guys hurt this year and it has not been fun. We don't want to go into the offseason with questions lingering.

"We might be better served to wait."

Up from Triple-A, Telis to share catching duties

SEATTLE -- Catcher Tomas Telis, called up from Triple-A Round Rock, went right into the lineup on Monday night, getting his first Major League start against the Mariners.

"It's a dream come true since I was a boy," Telis said. "It has been a long time, seven years as a Minor Leaguer."

Telis was called up after the Rangers traded Geovany Soto to the Athletics and Chris Gimenez to the Indians over the weekend. Manager Ron Washington said Telis and Robinson Chirinos will share the catching duties for the remainder of the season with J.P. Arencibia available in an emergency.

"We haven't really sat down to see how it will all play out but both will play," Washington said.

Telis has been overshadowed as a catcher in his Minor League career by Jorge Alfaro, who is considered one of the Rangers top overall prospects. But Telis has always been considered to have substantial offensive potential, and his defensive game has made significant progress since he underwent Tommy John elbow reconstruction surgery in 2010.

"The best thing he does is his throwing," said Hector Ortiz, the Rangers' Minor League catching coordinator. "He has very quick feet and a strong arm. His blocking is good. His receiving in the past had some issues but [lately] it has been very good. He is not the best receiver in the world but he gets it done."

Telis, a switch-hitter, hit .318 with 23 doubles, five home runs and 50 RBIs over 106 games between Double-A Frisco and Round Rock this season. He was hitting .345 in 36 games at Round Rock.

Worth noting

• General manager Jon Daniels said Thursday will be Derek Holland's last start on medical rehab assignment. The plan is for Holland to throw 90-100 pitches and then join the Rangers rotation. He has been sidelined all season after undergoing offseason surgery on his left knee.

• The Mariners have bumped Felix Hernandez from his start against the Rangers on Wednesday. They are giving him extra rest so he can pitch against the Nationals on Friday. Hernandez has 21 career losses against the Rangers, the most by any opponent in club history.

• Class A Spokane right-hander Nick Gardewine has been named the Northwest League Pitcher of the Week for Aug. 18-24. It's the second time in three weeks for Gardewine, a seventh-round pick in 2013 from Kaskaskia (Ill.) College.

• Utility player Drew Robinson has been promoted from Double-A Frisco to Triple-A Round Rock.

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.