Stephon Castle starred as the San Antonio Spurs sealed their spot in the Western Conference finals with a convincing 139-109 win over the Minnesota Timberwolves.

Castle led the way with 32 points, while Victor Wembanyama added 19, as the Spurs clinched the series 4-2 to set up a heavyweight match-up against the top-seeded Oklahoma City Thunder.

The Spurs met the Thunder – the reigning NBA champions – five times during the regular season and finished with a 4-1 record against them.

Repeating that over the seven-game Western finals would earn the Spurs a spot in the NBA finals.

“We’re not even thinking about that right now,” Castle said after Friday’s victory over the Timberwolves.

“The games ahead are a totally different game. They are rolling right now. They’ve won eight straight.

“It’s going to be tough to knock them off, but we’re pretty confident we can do it.”

Elsewhere, the Detroit Pistons beat the Cleveland Cavaliers 115-94 to tie their series and set up a deciding game seven .

Cade Cunningham scored 21 points, while Paul Reed and Jalen Duren added 17 and 15 respectively, as the top-seeded Pistons forced a decider for the second play-off round in a row.

Detroit had trailed 3-1 to Orlando Magic in the previous round before reeling off three straight wins to take the series 4-3.

The Pistons host the Cavaliers in Detroit on Sunday to decide who will face the New York Knicks in the Eastern Conference finals.