Mariners first-sacker Casey Kotchman mishandled a sharp grounder hit by Curtis Granderson with one out in the bottom of the eighth, with the Yankees leading, 7-4, ending a streak of 274 consecutive games without a miscue. An unearned run scored on the play, and another came in later in the inning.
The previous record was 238 games by Kevin Youkilis of the Red Sox.
It was Kotchman's first error since July 20, 2008, when he played for the Braves, a streak of 2,379 fielding chances handled cleanly.
"It was a tough one, an in-between hop, and it was hit hard," Kotchman said after the Mariners' 9-5 loss at Yankee Stadium. "It was the scorer's decision. I didn't analyze it."
Mariners third baseman Jose Lopez said it should have been ruled a hit, comparing it to a ball hit to Yankees second baseman Robinson Cano by Mariners shortstop Josh Wilson in the fourth.
Cano mishandled a short-hop attempt, and Wilson was credited with an infield single.
Lopez said Kotchman's play was more difficult.
"I haven't really analyzed it," Kotchman said when asked about the streak. "I have been focused on trying to win games. I really haven't thought about it too much."
Jim Street is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.