(Photo credit: Jaime Valdez-Imagn Images)

Guards Stephon Castle and Dylan Harper helped the San Antonio Spurs overcome the absence of Victor Wembanyama and regain the upper hand in their Western Conference first-round series against the Portland Trail Blazers.

The young duo may face the tall task of playing without the 7-foot-4 superstar once again on Sunday afternoon when the Spurs and Blazers reconvene in Portland for Game 4. San Antonio holds a 2-1 lead in the best-of-seven series.

Castle scored 33 points, and the rookie Harper added career bests of 27 points and 10 rebounds on Friday, helping the Spurs overcome a 15-point deficit in the third quarter en route to a 120-108 victory over the Blazers.

Luke Kornet collected 14 points, 10 rebounds and two blocks while starting in place of Wembanyama, who remained on the sideline wearing a white T-shirt and multi-colored cardigan. The NBA Defensive Player of the Year and finalist for the NBA MVP award resides in concussion protocol after sustaining a head injury in the second quarter of San Antonio's 106-103 loss in Game 2 on Tuesday.

'Obviously, there's a lot that goes into that, but he's doing well and progressing,' Spurs coach Mitch Johnson said of sitting Wembanyama in Game 3. Johnson declined to speculate on the towering Frenchman's status for Sunday's game.

San Antonio has put itself in position to push Portland to the brink of elimination due in large part to its spirited play in the second half of Game 3. The Spurs outscored the Trail Blazers by a 61-43 margin after halftime.

'I think our defense and our rebounding,' said Castle, when asked about what changed in the second half. 'We made an emphasis on that before the game, but we weren't really doing it the first half that well. We fixed it by not allowing them to get offensive rebounds and get out on the run.'

Portland acting coach Tiago Splitter had a different take on what changed in the third and fourth quarters.

'We weren't as involved,' he said. '(The Spurs were the more) physical team in the second half. They played better. Made shots. I think Harper and Castle were unbelievable. Played a very good game, getting to the line, shooting 3s, being physical on defense, rebounding, pushing (Donovan Clingan) around, all of them, they were more physical than us. Rebounding 50/50 balls. That was the game, and they were just better.'

Jrue Holiday scored 29 points, and Scoot Henderson added 21 to pace the Trail Blazers. The duo combined to make 10 of 19 attempts from 3-point range.

In the third quarter, Holiday drained a pull-up 3-pointer and added a steal that led to a pair of free throws by Jerami Grant to boost the Blazers' lead to 82-67. It slowly went south for Portland from there, however.

'Losses like this (tick) you off ... if you feel like you had the game, you know, obviously they were down a great player, you know, but it was a great team,' backup center Robert Williams III said. 'They came out with the W. Yeah, these are the ones, you know, you kind of lose sleep over.'

--Field Level Media