The Phoenix Suns have signed center Gracin Bakumanya, forward Derek Cooke Jr., guard Shaquille Harrison and forward Derrick Jones Jr., bringing the club’s roster to 19 players.

Bakumanya, a 6-11, 220-pound center, went undrafted in 2016 as an international early entry candidate. A native of the Democratic Republic of the Congo, the 19-year-old played the 2015-16 season with Antibes Espoirs, the training center for Antibes Sharks of LNB Pro A, the top-tier league in France. He averaged 14.3 points and 8.5 rebounds in 30 games with Antibes Espoirs, in addition to playing in two games with Antibes’ Pro A team. At NBA Summer League 2016, Bakumanya saw action in two contests with Houston.

Cooke, a 6-9, 220-pound forward, spent the 2015-16 season with the Suns’ NBA D League affiliate, then the Bakersfield Jam. In 47 games with the Jam, he averaged 4.8 points and 7.0 rebounds, including 3.1 offensive boards which tied for sixth in the league, in 23.4 minutes. Cooke was also a member of the Suns at NBA Summer League 2016, appearing in three games in Las Vegas. Prior to going undrafted in 2015, Cooke played three seasons at the University of Wyoming where he helped the Cowboys to a Mountain West Conference tournament title and NCAA tournament berth in 2014-15. As a senior in 2014-15, he averaged 8.1 points on 72.0 percent shooting and 5.8 rebounds.

Harrison, a 6-4, 185-pound guard, went undrafted this past summer following a successful four-year career at the University of Tulsa. A starter in all 133 games in his four years, he averaged 11.1 points, 4.5 rebounds, 3.5 assists and 1.8 steals for his career, finishing second in program history with 461 career assists and third with 244 steals. As a senior in 2015-16, Harrison averaged career-highs of 15.1 points, 5.5 rebounds and 4.1 assists as he was named the American Athletic Conference Men’s Basketball Scholar Athlete of the Year. Harrison earned All-AAC Second Team honors in both his junior and senior seasons at Tulsa.

Jones, a 6-7, 190-pound forward, went undrafted in 2016 after playing one season at UNLV. The Runnin’ Rebels’ second-leading scorer in 2015-16, he averaged 11.5 points on 58.9 percent shooting and 4.5 rebounds in 30 games during his freshman season. Jones recorded four double-doubles at UNLV, including a career-high 26 points to go with 10 rebounds against Chaminade at the Maui Invitational. 

P.J. Tucker underwent a successful low back microdiscectomy procedure. The surgery was performed by Dr. Dennis Crandall. Tucker is expected to be out approximately six to eight weeks.

Preparing for his sixth NBA season and fifth with the Suns, Tucker is a four-time winner of the team’s Majerle Hustle Award.

In 2015-16, he averaged 8.0 points, 6.2 rebounds, a career-high 2.2 assists and 1.3 steals while playing all 82 games (80 starts).

The Phoenix Suns have hired Mehmet Okur as player development coach.

Okur, a 2007 NBA All-Star, will specialize in the skills development of the Suns’ post players. A former 10-year pro in the NBA, Okur averaged 13.5 points and 7.0 rebounds while shooting 37.5 percent from three-point territory as a 6-11 forward/center in 634 games with the Detroit Pistons, Utah Jazz and New Jersey Nets. 

In Okur’s final season with the Jazz in 2010-11, he was a teammate of Earl Watson and they played for current Suns assistant coach Tyrone Corbin.

Jason Hervey has been hired by the Phoenix Suns as an advance scout.

Hervey joins the Suns after spending the past two seasons as an NBA and college personnel scout with the Minnesota Timberwolves. Prior to his time with the Timberwolves, Hervey spent two seasons as director of basketball operations for the Pistons and held positions of advance scout and video coordinator with the Washington Wizards from 2009-12. His NBA career began as the assistant video coordinator for the Pistons from 2005-09.

Alan Williams' $874,636 contract with the Phoenix Suns has been guaranteed.

“It was an easy decision for us,” Suns General Manager Ryan McDonough said. “He’s played well at two summer leagues. He’s really improved from the end of last season. He’s transformed his body. He’s developing his touch outside the paint and added a push shot.”

Williams went to high school in the Phoenix area.

Williams was an all-NBA Summer League first team honoree this year, when he averaged 11.8 points and 11.2 rebounds over six games. 

Williams is the Suns’ 14th player with a guaranteed contract for next season. They can carry up to 15 players in the regular season.