Philly forward Andres Nocioni was fined $25,000 for throwing his mouthpiece into the stands at Oklahoma City Arena with 2:08 left in the first quarter of the Thunder's 109-103 victory.
A fan roughly 10 rows up along the baseline caught the mouthpiece in mid-air and a Sixers staffer retrieved it.
The Thunder handily leads the league in free-throw shooting at 87.3 percent, but shot an uncharacteristically low 77.6 percent from the line during the preseason.
Things got so bleak, Brooks playfully fired himself as the team's free-throw coach. "I don't know what was happening in the preseason, but I do know we weren't very good," Brooks said.
A career 88.4-percent free-throw shooter, All-Star Kevin Durant misfired at 75.0 percent in exhibition games. Now the team's free-throw percentage is nearly 10 percent higher and Durant is at 91.4 percent.
â€œI don't know what was going on,â€ Durant said. â€œYou get to the line, and you get a little arrogant up there. You just shoot it, you look away and it comes out.â€