The 2026 NBA Western Conference finals heat up as the Oklahoma City Thunder face off against the San Antonio Spurs in Game 4 on Sunday. Currently, the Thunder lead the series 2-1 after a decisive 123-108 victory in Game 3, marking back-to-back losses for the Spurs for the first time since January.

The Spurs, who have yet to lose three consecutive games this season, are determined to even the series before returning to Oklahoma City. Key player Jalen Williams remains questionable for OKC due to a hamstring injury, while Ajay Mitchell is confirmed out with a calf issue.

Tipoff is scheduled for 8 p.m. ET at the Frost Bank Center in San Antonio. The Spurs enter as a 2.5-point favorite, with an over/under set at 219.5 points, according to FanDuel Sportsbook.

Mike Barner, a leading NBA expert from SportsLine, has been on a remarkable 136-93 run with his NBA picks, yielding significant returns for bettors.

Key Betting Lines

• Spurs vs. Thunder Spread: Spurs -2.5
• Over/Under: 219.5 points
• Money Line: Spurs -142, Thunder +119

Barner's analysis suggests a strong lean towards the Over 218.5, noting that the total has exceeded expectations in all three games of the series thus far. Both teams have seen the Over hit consistently during the playoffs, with San Antonio experiencing eight straight games surpassing the total.

Despite the Spurs' shooting struggles, both teams combined for 231 points in Game 3, the lowest total of the series,

For additional insights and betting predictions, fans can consult Barner's picks on SportsLine.