The Oakland Athletics’ and Raiders' home stadium will no longer be called the O.co Coliseum.

According to the A's spokeswoman Catherine Aker, Overstock.com has informed the team that "they are opting out of the naming rights with the stadium."

The stadium will, until further notice, be known as the Coliseum, Oakland Coliseum or Oakland—Alameda County Coliseum. It remains unclear what permanent name will be picked.

Both parties have "parted amicably," Aker said in an email Saturday, but did not speak to the reason behind the split.

Overstock.com’s corporate sponsorship agreement with the A’s will not be affected by this move, she said.

Check back for updates.