Chicago White Sox owner Jerry Reinsdorf labeled his team’s record-shattering losing season “embarrassing” and a “failure” that he said was his responsibility.

Reinsdorf released a letter to fans as the White Sox entered their final game Sunday with a 40-121 record, the most losses of any major league club since 1900.

“By all measures, our on-field performance this season was a failure,” Reinsdorf wrote. “As the leader of this organization, that is my ultimate responsibility. There are no excuses.”

“I want to thank you for continuing to support the team throughout what was an embarrassing season,” he added. “You all deserved better. This season’s performance was completely unacceptable and the varying reactions and emotions from our fan base are completely understandable.”

Chicago broke the post-1900 record for losses, which had been held by the 1962 New York Mets, who went 40-120 during the franchise’s inaugural season. The overall big league mark was set by the 1899 Cleveland Spiders at 20-134.

Reinsdorf, 88, headed a group that purchased control of the White Sox in 1981 and the NBA’s Chicago Bulls in 1985.

“Every blown save, every defensive miscue, every shutout, every sweep — hurt,” he said. “It was a long, painful season for us all. We recognize, on a daily basis, that it is our responsibility to earn your trust, attention, time and support. We vow to take that approach daily as we put the work in this offseason to be better.”

“This wasn’t the year we wanted and these aren’t the numbers we wanted,” said interim manager Grady Sizemore said, whose team beat the Detroit Tigers 9-5 Sunday to finish 41-121. “But that doesn’t mean this is a total loss. We can build from this and get better.”

MARLINS, SCHUMAKER PART WAYS >> The Miami Marlins have parted ways with Skip Schumaker, ending the 2023 NL Manager of the Year’s two-season stint with the team.

The Marlins (62-100 this season) went 146-178 under Schumaker, who was hired in October 2022 as the franchise’s 16th manager. His contract was for two years with a club option for the 2025 season, which the team voided earlier this year.

“It has been a tremendous honor serving as manager of the Miami Marlins. I’ve built long-lasting friendships with the staff and players and am proud of all that we accomplished together,” he said.

Schumaker in 2023 led the Marlins to their first playoff appearance in a non-pandemic year since 2003, losing in the wild-card round.