White is 1-1 with a 7.03 ERA in nine appearances this season, but only recently started having control issues. In his last two games, spanning two innings, he allowed nine earned runs on eight hits while walking six batters.
His ERA went up three runs after those two appearances.
"You appreciate guys who want to go out there and try to make the best when they're not 100 percent, but it was affecting his control and he wasn't finishing his pitches," McLaren said. "He might hurt himself severely if he tried to pitch through this."
Huber has appeared in two games with Seattle this season, posting a 2.25 ERA.
Guillen back, Beltre not:
Right fielder Jose Guillen was back in the Mariners' lineup Saturday, one day after leaving the game with a sore right elbow. Third baseman Adrian Beltre, though, was not.
Beltre is day-to-day with a sprained left thumb, and McLaren said it will be "a couple of days" before Beltre will be back in the lineup. Beltre injured his thumb in the eighth inning of Friday's game when diving for a line drive down the third-base line.
His glove appeared to roll under his wrist before he landed on it. Beltre was quickly replaced in the lineup by Willie Bloomquist, who also was in Saturday's lineup.
"[Beltre] wants to play every day," McLaren said. "He'll let us know when he's ready."
Guillen was hit by a pitch in the third inning of Friday's game and later left as the pain became more severe.
A confusing series of events in Friday's game led to a review of Safeco Field rules for the game on Saturday.
Victor Diaz's two-out double in the seventh inning bounced in fair territory down the right-field line before bouncing off a net against the wall in foul territory. It was played as a live ball, allowing Sammy Sosa to score the go-ahead run from first base.
McLaren said the net was installed in May to indicate a dead ball, and the play should have been a ground-rule double. The next batter in the Rangers' lineup, Marlon Byrd, grounded out, so Sosa would not have scored if it had been ruled as such.
Although the rule has never changed in Safeco Field's nine-year history, McLaren said the umpires were right, and were just operating under the rules they had been given before the series started.
"The umpires did exactly as they were told," McLaren said. "The interpretation of the ground rule got turned around somehow, and we're going to clarifiy it and let everybody know now that's how we do it."
Seattle tied the game before allowing the eventual game-winning run in the eighth.
McLaren, who is acting as manager until Monday while Mike Hargrove attends his daughter's high school graduation in Ohio, said he had not yet spoken with Hargrove about Friday's game, although he's made numerous attempts to contact him.
"I left him a message, and we've had trouble communicating," McLaren said. "I don't know the schedule of the graduation. I've called him three times and left messages. ... I'm sure we will."
Down on the farm:
Gookie Dawkins extended his hitting streak to seven games for the Tacoma Rainiers on Friday and has hit safely in nine of his last 10 games. Infielder Mike Morse was placed on the disabled list with a sore left wrist, and was replaced by Sean Burroughs, who had been working out in extended Spring Training.
The Mariners close out their four-game series against the Rangers on Sunday afternoon at 1:05 p.m. PT. Lefty Ryan Feierabend (0-1, 5.40 ERA) works opposite Texas right-hander Robinson Tejeda (4-5, 5.75 ERA).