Vito Mielnicki Jr. and Tiger Johnson get slots in Ryan-Mayer undercard on Sept. 27

Junior middleweight prospect Vito Mielnicki Jr. will return to action against once-beaten Romanian Daniel Buciuc in a 10-round battle on Friday, Sept. 27, at The Theater at Madison Square Garden.

Mielnicki-Buciuc joins an ESPN+-streamed undercard headlined by the WBO welterweight title clash between reigning champ Sandy Ryan and former unified junior lightweight queen Mikaela Mayer.

In the 10-round junior middleweight co-feature, Puerto Rican contender Xander Zayas will take on Mexican contender Damian Sosa...