Detroit Pistons vs. Washington Wizards - April 8, 2016

Detroit Pistons center Andre Drummond (0) shoots a free throw in the second quarter of their NBA game against the Washington Wizards at the Palace of Auburn Hills in Auburn Hills, Friday, April 8, 2016.

(Mike Mulholland | MLive.com)

Andre Drummond was asked to spend the off-season working to improve his free-throw shooting, but it doesn't sound like trying them underhanded is one of the options in the works.

The Detroit Pistons center shot down the idea again Friday to Dom Amore of the Hartford Courant. Drummond was in his native Connecticut on Friday for former coach Jim Calhoun's charity basketball game.

"I'm just really going to continue to work on back-to-basket stuff," Drummond said. "And work on getting better from the foul line. I'm going to stick with the formula I have now."

What that formula is remains a mystery, though the Pistons showed their appreciation for the former University of Connecticut star in the offseason by signing Drummond to a five-year, $130 million contract extension.

Drummond's free-throw shooting has been abysmal since he entered the NBA in 2012. The NBA All-Star and rebounding champion is a career 38-percent shooter and hit a new low in 2015-16 season, making just 35.5 percent of his 586 attempts.

The NBA enacted a slight rule change for the upcoming season, expanding the punishment of a free throw and possession for deliberate, off-the-ball fouls from the last two minutes of the game to the final two minutes of each quarter.

Pistons president-coach Stan Van Gundy called the rule changes "more cosmetic than substantial" after the staff made it an offseason priority for Drummond to improve his free-throw shooting.

Detroit brought in professional shooting coach Dave Hopla prior to last season to work with Drummond. Hopla helped streamline Drummond's approach at the free-throw line in practice but the results failed to translate much in games.

"This is just a steppingstone for me," Drummond told the Courant. "I just became an All-Star this past year, all-NBA, so there are a lot of individual goals that I've successfully done, but there's a lot of work I need to do. ... (After) a lot of years of hard work, it's good to be rewarded. But it doesn't stop there, there's another level for me to keep working to get to."

You can read the entire Hartford Courant story here, with talk of returning to Connecticut, Jim Calhoun and Kemba Walker and Emeka Okafor's endorsements of Drummond.

OLYMPICS UPDATE: Pistons center Aron Baynes and Team Australia finished group play at the 2016 Rio Olympics 4-1 and qualified for the quarterfinals, scheduled for Wednesday. Baynes is averaging 9.6 points and a team-high 5.8 rebounds per game. Australia is scoring nearly 89 points per game, second-most of the 12 Olympic teams, behind the United States. ... Nigeria, with Pistons rookie guard Michael Gbinije, knocked off Croatia, 90-76, on Saturday for its first win in group play. Gbinije had eight points and three rebounds off the bench. Nigera is 1-3 and plays host Brazil on Monday.