The Western Conference finals will go to a seventh game after the San Antonio Spurs defeated the Oklahoma City Thunder 118-91 Thursday night at Frost Bank Center.Rebounding from their 13-point loss in Tuesday’s Game 5, the Spurs never trailed in Thursday’s Game 6, tying the series 3-3. Game 7 is Saturday night in Oklahoma City.The Thunder were within seven points at halftime, but the Spurs outscored them 32-13 in the third quarter to seize control.After a subpar Game 5 performance, Victor Wembanyama was closer to his normal self, scoring 28 points and grabbing 10 rebounds in the win. After shooting 4-for-15 on Tuesday, he was 10-for-21 (including 4-for-9 on 3-pointers) on Thursday.Dylan Harper made 6 of 9 shots from the field and scored 18 points for the Spurs. Stephon Castle logged 17 points and nine assists. Thursday’s win was the Spurs’ second by at least 20 points in this series, the other a 103-82 decision in Game 4.Two-time NBA MVP Shai Gilgeous-Alexander (15 points) shot 6-for-18 from the field, typifying the Thunder’s 37 percent shooting. The only game this postseason in which the Thunder have shot worse was Game 4 on Sunday, when they shot 33 percent.Here are some takeaways from Game 6:Defense and confidence power SpursWembanyama showed once again that he can answer for a bad game with a dominant one. Instead of forcing his way into the paint, he finally shot the ball with confidence and made it rain.When he saw those early shots go down, his defensive presence, as well as the rest of the team’s, hit a level they didn’t show in Game 5.But the Spurs’ biggest vulnerability in this series has been what happens with Wembanyama hits the bench. That’s when the team really turned up the defensive intensity on Thursday, dialing up a variety of coverages on Gilgeous-Alexander that kept the Thunder from going on any runs with Wemby out. Then, Dylan Harper finally found the bounce in his step once again, as he had his first big game since he suffered an adductor injury in Game 2.