Fire Waive Jordan Harrison, Activate Kamiah Smalls
Harrison made Portland's roster out of training camp and played 11 minutes in Saturday's season opener.
Portland's new WNBA team lost its first game in front of a packed house at Moda Center.
Portland could face elimination on Tuesday in San Antonio.
The Blazers blew a 15-point lead to fall to 2-1 with Victor Wembanyama's return looming.
Henderson's 31 points helped the Trail Blazers tie the series with the Spurs.
Despite standout performances from Deni Avdija and Scoot Henderson, the Blazers dropped Game 1 in San Antonio.
A win over the Clippers all but ensures the eighth seed and two shots to make the playoffs.
In front of new owner Tom Dundon, the Blazers looked their best in months in a win over the Clippers.
Jerami Grant's late-game heroics gave the Blazers their third win in a row.
Portland started its last extended road trip of the season with a loss to a Sixers team missing Tyrese Maxey and Joel Embiid.
After All-Star Weekend's viral social-media moment, Yang Hansen finally got to meet his idol.
Henderson had 11 points and nine assists in his season debut.
Avdija suffered a back injury near the end of Sunday afternoon's loss to New York.