By Keith Idec

The World Boxing Super Series announced the last two participants Wednesday in its upcoming 140-pound tournament.

Former WBO lightweight champion Terry Flanagan and unbeaten contender Ryan Martin have joined the eight-fighter field for a tournament that’ll begin on an undetermined date in the fall. Flanagan (33-1, 13 KOs), a southpaw from Manchester, England, and Cleveland’s Martin (22-0, 12 KOs) have join a group that includes Russia’s Ivan Baranchyk (18-0, 11 KOs), New Orleans’ Regis Prograis (22-0, 19 KOs), Belarus’ Kiryl Relikh (22-2, 19 KOs), Scotland’s Josh Taylor (13-0, 11 KOs), Russia’s Eduard Troyanovsky (27-1, 24 KOs) and Sweden’s Anthony Yigit (21-0-1, 7 KOs).

The 29-year-old Flanagan lost to Maurice Hooker last month in their 12-round fight for the WBO’s vacant junior welterweight title. Dallas’ Hooker (24-0-3, 16 KOs) defeated the favored Flanagan by split decision June 9 at Manchester Arena in Manchester.

“I’m excited to enter this tournament with some of the best fighters in my division,” Flanagan said in a press release. “I’m expecting some tough fights, but that’s exactly what I’m in the business for.”

The 25-year-old Martin most recently beat Colombian veteran Breidis Prescott (31-13, 22 KOs) by unanimous decision in an eight-round bout May 5 at StubHub Center in Carson, California.

“My height and speed will be too much for the other boxers in the tournament,” Martin said.

The quarterfinal matches for the WBSS’ 140-pound tournament will be determined Friday as part of its “Draft Gala” at Rossiya Theatre in Moscow.

Two of those fights already are set. Relikh must make a mandatory defense of his WBA title against Troyanovsky and the IBF has ordered a Baranchyk-Yigit fight for its vacant championship.

DAZN, a streaming service that’ll begin offering boxing September 22, will provide coverage of the WBSS’ entire 140-pound tournament.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.