Fielder got a second opinion Monday, and general manager Jon Daniels said Dr. Drew Dossett recommended surgery. That was the same as Dr. Robert Watkins in Los Angeles said last week after an MRI showed a herniation between Fielder's C4 and C5 disks.
While Daniels didn't want to speculate on the long-term future for the 32-year-old Fielder, the GM did acknowledge the seriousness of having a second surgery in close proximity to the first.
"He rehabbed once from it and came back. I think with each additional surgery in that area it increases the risk involved and just the overall, his ability to get back," Daniels said. "But it's not for me to speculate about that here today."
Dossett, a specialist in Texas who works with the Rangers, performed Fielder's surgery in May 2014 when he had a cervical fusion of two disks just below the area that is bothering the slugger now.
Fielder has hit a career-low .212 with eight homers and 44 RBIs in 89 games this season. He had recently been feeling weakness and discomfort in his neck and left arm, similar to what he felt two years ago before surgery.
"I just know that post-All-Star break last year and through the playoffs, and then just kind of inconsistency of this season, there were times he'd show you a spark or two, and then it would just kind of evaporate," manager Jeff Banister said. "There were times when the ball still came off his bat at 100 miles an hour. But I don't know this season that this was who we'd seen in the past."
Daniels said it seems like Fielder was feeling discomfort for some time before the MRI last week after acknowledging that there was an issue.
"I think he just wanted to play, and wanted to push through it," Daniels said.
Fielder wasn't in the clubhouse before Monday night's home game against Oakland.
Fielder was limited to 42 games during his Rangers debut in 2014, when he hit .247 with three homers and 16 RBIs. Fielder rebounded with a .305 average, 23 homers and 98 RBIs in 158 games last year, but fell off a bit the second half of the season.
Fielder has been primarily the designated hitter for the Rangers. He had played in 547 consecutive games and hadn't missed consecutive games since August 2007 before his surgery two years ago.
"Obviously, Prince is a big part of this team. We know what he can do," third baseman Adrian Beltre said. "He was a great asset for us last year. We're going to miss him, but hopefully he'll get right."
The Rangers were tied for the American League lead with 57 wins going into Monday night's game. But their AL West lead had shrunk to 2½ games over Houston, from the 10-game division lead they had before playing 19 of their previous 23 games on the road.