Bryn Forbes led all scorers with 18 points as the visiting San Antonio Spurs took charge early and cruised to a 114–83 win over the Portland Trail Blazers on Thursday to capture their season-high third straight victory. The Spurs never trailed, amassing a double-digit lead in the first quarter that they built to as much as 27 early in the third period. Portland clawed back within 12 points in the fourth quarter, but it was far too little, too late for the short-handed Trail Blazers, who played without Damian Lillard (abdomen) and Nassir Little (ankle). San Antonio’s Doug McDermott returned from missing four games with a knee injury to score 16 points, and Dejounte Murray tallied 15 points and distributed 13 assists. Keldon Johnson and Jakob Poeltl scored 14 points apiece, and Derrick White hit for 12. CJ McCollum and Norman Powell scored 16 points each to lead the Trail …