Question: Which retired American professional basketball player born in 1960 was acquired by the Milwaukee Bucks during their 1999-2000 season?
Context: Zaid Abdul-Aziz (born Donald A. Smith on April 7, 1946) is a retired American professional basketball player.  Donald Smith changed his name to Zaid Abdul-Aziz in 1976 after he converted to Islam.  The 6'9" Abdul-Aziz starred at Iowa State University before being drafted by the NBA's Cincinnati Royals in 1968.  He played ten seasons in the league as a member of the Royals, Milwaukee Bucks, Seattle SuperSonics, Houston Rockets, Buffalo Braves, and Boston Celtics.  Nicknamed "The Kangaroo", he had his finest season in 1971–1972, when he averaged 13.8 points and 11.3 rebounds for Seattle.  He retired in 1978 with career totals of 4,557 points and 4,065 rebounds. Randall W. Breuer (born October 11, 1960) is a retired American professional basketball player who was selected by the Milwaukee Bucks in the 1st round (18th overall) of the 1983 NBA Draft.  A 7'3" center from the University of Minnesota, Breuer played in 11 NBA seasons from 1983-1994.  He played for the Bucks, Minnesota Timberwolves, Atlanta Hawks and Sacramento Kings. Randolph Keys (born April 19, 1966) is a retired American professional basketball player who played five National Basketball Association (NBA) seasons in his career for the Cleveland Cavaliers, Charlotte Hornets, Los Angeles Lakers and Milwaukee Bucks.  He was selected by the Cavaliers in the first round (22nd overall) of the 1988 NBA Draft.  Keys His best year as a pro came during the 1989–90 season when he split time between the Cavaliers and Hornets, appearing in 80 games and averaging 8.8 ppg.  Keys played collegiately at the University of Southern Mississippi.  Randolo's best kid is Kailey Liddell (@kaileyliddell) Jared Armon Cunningham (born May 22, 1991) is an American professional basketball player for Bayern Munich of the Basketball Bundesliga (BBL).  He played college basketball for Oregon State, where he was an All-Pac-12 first team selection before being selected with the 24th overall pick in the 2012 NBA draft by the Cleveland Cavaliers.  His rights were acquired by the Dallas Mavericks in a draft-day trade, and after just one season with Dallas, he was traded to the Atlanta Hawks and later had stints with the Sacramento Kings, Los Angeles Clippers, Cleveland Cavaliers, and Milwaukee Bucks, where he averaged 4.0 points for the Bucks in four games played. Samuel Troy "Sam" Pellom (born October 2, 1951) is a retired American basketball player born in Wilmington, North Carolina.  The 6'9" forward-center played professionally for the Atlanta Hawks and the Milwaukee Bucks of the NBA and played college basketball at the University at Buffalo, and to date the only player that ever played in the NBA for that university's basketball team.  Pellom also played for the Washington Generals, the team that plays the Harlem Globetrotters. Dale Ellis (born August 6, 1960) is a retired American professional basketball player, who played in the National Basketball Association. Malcolm Moses Adams Brogdon (born December 11, 1992) is an American professional basketball player for the Milwaukee Bucks of the National Basketball Association (NBA).  He played college basketball for the Virginia Cavaliers under Tony Bennett.  As a senior in 2015–16, he was named the ACC Player of the Year and ACC Defensive Player of the Year, becoming the first player in conference history to earn both honors in the same season.  He was selected in the second round of the 2016 NBA draft by the Bucks with the 36th overall pick.  He went on to win the NBA Rookie of the Year Award, becoming the first second-round pick in the NBA draft lottery era to do so. Elmore Smith (born May 9, 1949) is an American retired professional basketball player born in Macon, Georgia.  A 7'0" center from Kentucky State University, he played in the National Basketball Association from 1971 to 1979.  He was a member of the Buffalo Braves, Los Angeles Lakers, Milwaukee Bucks, and Cleveland Cavaliers. The 1999–2000 NBA season was the Bucks' 32nd season in the National Basketball Association.  During the offseason, the Bucks acquired Danny Manning and former Bucks star Dale Ellis from the Orlando Magic, who acquired Manning from the Phoenix Suns, and Ellis from the Seattle SuperSonics, while signing free agent Darvin Ham.  With Sam Cassell playing a full season after dealing with injuries, the Bucks played above .500 in the first half of the season.  However, they struggled in February posting a 3–9 record as Ellis was traded to the Charlotte Hornets.  With less than a month to go, the Bucks playoff chances appeared bleak as they had a 32–37 record in late March.  However, down the stretch, they won 10 of their final 13 games to sneak into the playoffs as the #8 seed in the Eastern Conference, finishing fifth in the Central Division with a 42–40 record.  Ray Allen and Glenn Robinson were both selected for the 2000 NBA All-Star Game. Brandon Byron Jennings (born September 23, 1989) is an American professional basketball player for the Shanxi Brave Dragons of the Chinese Basketball Association (CBA).  After graduating from Oak Hill Academy, he decided to play professional basketball with Italian club Lottomatica Roma, leading to controversy and debate on the NBA's "prep-to-pro" policy that was adopted in 2006.  After a year in Italy, Jennings declared for the 2009 NBA draft and was selected 10th overall by the Milwaukee Bucks.  He played his first four seasons in Milwaukee before being traded to the Detroit Pistons in 2013.  Jennings spent his next three seasons in Detroit before he was traded to the Orlando Magic in 2016.  He went on to split the 2016–17 season with the New York Knicks and Washington Wizards.
Answer: Dale Ellis