The Portland Trail Blazers will continue to miss big man Zach Collins after it was announced Wednesday that he has undergone another ankle surgery.

In a statement, the Blazers announced that Collins underwent revision surgery to repair a left medial malleolus stress fracture, and the 23-year-old will be out indefinitely.

Collins previously underwent surgery on the same ankle on Sept. 1 after suffering an injury during the play-in tournament against the Memphis Grizzlies in the NBA bubble, causing him to miss Portland’s first-round series against the Los Angeles Lakers.

Zach Collins, the 10th overall pick of the 2017 NBA Draft, was hounded by injuries last season and played just 11 games. He averaged 7.0 points, 6.3 rebounds, and 1.5 assists on 47.1% shooting in his third season in the league.

The former Gonzaga Bulldog was initially expected to return by January 2021, but he will now face a longer road to recovery. In the offseason, Portland shored up its frontcourt by bringing back Enes Kanter and signing Harry Giles to back up starting center Jusuf Nurkic in an attempt to surround Damian Lillard and CJ McCollum with more talent in the hopes of moving up in the Western Conference after finishing with the eighth seed last season.

The Blazers currently have a 2-1 record after three games this season. They are coming off an impressive 115-107 win over the Lakers and will face the Los Angeles Clippers on Wednesday. While Portland has a deep roster, the continues absence of Zach Collins is unfortunate.