Warriors guard Klay Thompson will defend his NBA three-point contest title Feb. 18 during All-Star Weekend, a source has confirmed with The Chronicle. Thompson beat Curry to win the three-point contest at All-Star Weekend last February, tying Curry's final-round record of 27 points. Thompson, who is shooting 40.3 percent from beyond the arc, is fifth in the league with 149 made three-pointers.