The San Jose-based fight promotion revealed the news via a press release Tuesday morning.
Prangley will replace Renato “Babalu” Sobral in a light heavyweight match against Anthony Ruiz in a rematch between the two fighters. Sobral was forced to pull off of the card due to injury.
Prangley and Ruiz first met at Strikeforce’s “Tank vs. Buentello” event that featured Paul Buentello knocking out MMA pioneer Tank Abbott at 0:43 of round 1 on Oct. 7, 2006. Prangley was also victorious on the card, submitting Ruiz at 4:42 of round 1.
The former UFC veteran had been scheduled to compete during Affliction’s “Day of Reckoning” event on Oct. 11 in Las Vegas against Matt Lindland but he became available to fight for Strikeforce after last week’s announcement that the event had been postponed until Jan. 17.
Prangley, a native of South Africa, has not competed since participating in Strikeforce’s single-night, four-man middleweight tournament last November.
Sobral’s original opponent was Strikeforce light heavyweight champion Bobby Southworth. Southworth also pulled off the card due to injury and was replaced by Ruiz, a veteran of both Strikeforce and EliteXC.
Ruiz’s last bout was a win against Jeromy Freitag in a non-televised undercard bout during EliteXC and CBS’ “Saturday Night Fights” on July 26. The victory marked the third time Ruiz has defeated Freitag in his career.
Prior to the Freitag bout, Ruiz challenged Southworth for his title, losing a unanimous decision on June 27 during a Strikeforce show in San Jose that was televised on HDNet. He earned the title shot after defeating Southworth via TKO due to a cut in a non-title affair last November.
In addition to Prangley vs. Ruiz II, “Strikeforce at the Mansion II” will feature Kazuo Misaki vs. Joe Riggs, Strikeforce lightweight champion Josh Thomson in a non-title bout vs. Ashe Bowman, Terry Martin vs. Cory Devela, and DREAM star Mitsuhiro Ishida vs. Justin Wilcox.