Three thoughts on Oklahoma City’s 108–90 win over the Los Angeles Lakers in Game 1 of the Western Conference semifinals …  Oklahoma City’s defense dominated The Thunder offense didn’t exactly misfire. They shot 49% from the floor and 43% from three. They handed out 29 assists and scored 48 points in the paint. Chet Holmgren scored 24 points and Ajay Mitchell chipped in 18. But Shai Gilgeous-Alexander was uncharacteristically sloppy (seven turnovers) and only Jared McCain (12 points) cracked double figures off the bench. And it didn’t matter. Oklahoma City’s defense was stifling . It held the Lakers to 42% shooting, including 33% from three-point range. It forced 17 turnovers, scoring 20 points off of them. It outscored L.A. 34–15 off the bench. Los Angeles scored 37 points in the second half, connecting on just 38.5% of its attempts over the final two quarters.  “We settled in defensively,” said Thunder coach Mark Daigneault. “We had some game plan–type breakdowns early.…