A few notes from around the boxing world:

• Junior welterweight contender Amir Imam (18-0, 15, KOs) looms as the mandatory challenger for titlist Viktor Postol (28-0, 12 KOs), who claimed a vacant belt Oct.3 by knocking out Lucas Matthysse in the 10th round of an upset. However, the mandatory fight won’t happen right away. Postol was approved for an optional defense while Imam, 25, of Albany, New York, will stay busy on Nov. 28 in Quebec City, where he will face Chicago’s Adrian Granados (16-4-2, 11 KOs), 26, of Chicago, in a 10-rounder on the undercard of super middleweight titlist James DeGale’s defense against Lucian Bute. Imam knocked out Fernando Angulo in the fourth round on July 18 in the eliminator to become the mandatory challenger. Imam-Granados will air on Showtime Extreme’s coverage of the card’s preliminary bout beginning at 9 p.m. ET/PT. The Showtime Extreme portion of the card will also include a 10-round heavyweight fight between 28-year-old Colombia-born, Montreal-based Oscar Rivas (17-0, 12 KOs) and Curtis Harper (12-4, 8 KOs), 27, of Jacksonville, Florida.

• Flyweight titlist Amnat Ruenreong (16-0, 5 KOs), 35, of Thailand, will make his fifth defense when squares off with Myung Ho Lee (19-4-1, 6 KOs), 32, of Japan, on Dec. 7 in Hua Hin, Thailand, promoter Jimmy Chaichotchuang announced. The fight is being put on in honor of the king of Thailand’s birthday (Dec.5), a popular time frame for a title fight every year in Thailand. Ruenreong owns wins against quality opponents Rocky Fuentes, Kazuto Ioka, McWilliams Arroyo, Zou Shiming and Johnriel Casimero. Lee has won three fights in a row but lost both times he faced a legitimate opponent, decisions to former junior flyweight titlist Edgar Sosa and Fuentes, both in 2012.

• Mexican junior featherweight prospect Diego De La Hoya (12-0, 8 KOs), first cousin of Oscar De La Hoya, his promoter, will take on countryman Giovanni Delgado (15-3, 9 KOs) in an eight-round bout that will headline Golden Boy’s card at the Hard Rock Hotel & Casino in Las Vegas on Nov. 20 (Estrella TV), the night before the big Miguel Cotto-Canelo Alvarez HBO PPV card that Golden Boy is co-promoting at Mandalay Bay. In the co-feature, Puerto Rico’s John Karl Sosa (13-0, 6 KOs) faces Mexico’s Alan Sanchez (16-3-1, 8 KOs) in an eight round welterweight fight.