Duckworth was the ninth pick in the 2nd round of the
1986 NBA draft, chosen by the
San Antonio Spurs. Later that season, he was traded to the
Portland Trail Blazers for rookie
Walter Berry. His rookie season was unspectacular, as Duckworth came off the bench to back up center
Steve Johnson (who in turn got the starting center position when
Sam Bowie suffered a broken leg). However, the next season Johnson went down with an injury (in addition; Bowie broke his leg again at the beginning of the season), and Duckworth was pushed into the starting role, from where he averaged 15.8 points and 7.4
rebounds per game. Also, after having previously never averaged over 70.0
percent from the
free throw line, he shot 77% that year, rebounded well, and played good defense – earning him the
1988 NBA Most Improved Player Award. The following season, Duckworth improved his averages to 18.1 points and 8.0 rebounds, and was named to the
Western Conference All-Star team. After the
1988–89 campaign, Bowie was traded to the
New Jersey Nets for
Buck Williams and Steve Johnson. Johnson was left unprotected in the 1989
expansion draft, allowing Duckworth to become the starting center. The
1990 and
1991 seasons were also successful for Duckworth and the Blazers. Although 1988–89 was statistically Duckworth's best season, the team enjoyed greater success in the following years — advancing to the
NBA Finals in 1990, and posting a 63–19 record in 1990–91. The presence of Williams as the starting
power forward, with rebounding as his main assignment, allowed Duckworth to concentrate on scoring and defense. In 1991 Duckworth was selected as an
NBA All-Star for a second time. Duckworth's production began to slip in
1991–92, he was outplayed at times in the
1992 NBA Finals and was even less productive throughout the following season. At the end of
1992–93, Duckworth was traded to the
Washington Bullets for
forward Harvey Grant. Duckworth played two seasons with the Bullets, where he struggled with weight problems. During the 1994–95 season, during which he was reported to weigh 310 lbs, he was suspended indefinitely for not staying in good physical condition. He was traded to the
Milwaukee Bucks for
Bob McCann during the 1995–96 season, missing most of the season due to injuries. He then played for the
Los Angeles Clippers in
1996–97, after which he retired from professional basketball. ==NBA career statistics==