Eimantas Stanionis was among the first boxers signed by promoter Richard Schaefer at the start of Ringstar Promotions. 

That relationship continues through present day, with the unbeaten welterweight now an integral part of Schaefer's latest creation. 

Upstart boxing and media company Probellum—which officially launched in mid-September and with Schaefer serving as its President—signed its first boxer in Stanionis (13-0, 9KOs; 1ND), a 2016 Lithuanian Olympian and current unbeaten welterweight company. The announcement Monday was the latest made by Probellum, which has provided daily updates of professional partnerships formed since its inception and now delved into the promotional aspect of its business model.

"I'm thrilled to continue my relationship with Eimantas Stanionis," said Schaefer. "I've been working with him since after the Olympics in 2016, and he's on the verge of some tremendous fights."

Stanionis has been with Schaefer since December 2016, making his pro debut as a Ringstar-promoted fighter in April 2017. The entirety of his pro career has taken place on shows presented by Premier Boxing Champions (PBC), a relationship that is expected to continue moving forward though just under a new promotional banner. 

"The world is his oyster and it's great to work with him at Probellum. We already have a strategic partner in Lithuania, so there are a million opportunities for him. We're looking forward to continue working with PBC who have done a great job with Eimantas. With manager Shelly Finkel, Eimantas has one of the best teams in boxing."

Stanionis last fought in August, settling for a No-Decision with former welterweight titlist Luis Collazo. The Fox-televised main event at The Armory in Minneapolis ended just 0:29 shy of being registered as an official bout, as Collazo was unable to continue due to a cut inside of his right eyelid caused by a clash of heads. Stanionis was well on his way to winning the fight, doing so every way but officially in the end. 

Prior to the bout, Stanionis picked up his career best win in a twelve-round, unanimous decision over former title challenger Thomas Dulorme this past April at Mohegan Sun Arena in Uncasville, Connecticut.

Probellum was formed with the understanding of partnering up with as many promoters as possible, taking a global approach to launching its brand. It's far removed from the business model Schaefer helped form with Golden Boy Promotions, which he ran from its 2002 launch through 2014 when he and Oscar De La Hoya went through an ugly and very public divorce. 

Schaefer returned to the sport in late 2016, mostly working with PBC and signing Nonito Donaire along with a number of boxers from the 2016 Olympics including Stanionis. 

"We're going to do our own events and execute network agreements as well, but we don't mind being co-promoters," said Schaefer, who helped architect Golden Boy Promotions into a powerhouse. "We want to make sure the fights the sport needs are going to happen. So we really want to have an all-inclusive approach. We want to work with every promoter. We want to work with every manager.

"These aren't just words. We're going to follow that up with action."