Slightly more than two weeks out from the event and UFC Fight Night 25: Shields vs. Ellenberger has suffered a couple losses to its fight card.

Mackens Semerzier and DaMarques Johnson are both out of their respective bouts due to injury. The UFC announced the withdrawals via its Twitter account on Wednesday.

Semerzier was slated to meet Mike Lullo in a featherweight contest, while Johnson had a welterweight bout on tap with Clay Harvision.

MMAWeekly.com has learned that Johnson has already been replaced by Seth Baczynski. There has yet to be a clear replacement for Semerzier.

Semerzier (6-3) had just rebounded with a win over Alex Caceres at UFC Fight Night 24 in March, ending a three-fight skid that almost saw him out of a job.

A cast member from the ninth season of The Ultimate Fighter, DaMarques Johnson (12-9) has been bouncing between wins and losses in his UFC tenure. He most recently submitted to Amir Sadollah due to strikes at UFC Fight Night 24, and was hoping to bounce back against Harvison.

Baczynski (13-6) failed to fight his way into the fighter house on the eleventh season of TUF. He also lost his one fight in the Octagon, to Brad Tavares, at the TUF 11 season finale event. Baczynski has since won back-to-back fights outside the Octagon, earning the opportunity to step in on short notice against Harvison.

UFC Fight Night 25: Shields vs. Ellenberger is headlined by welterweights Jake Shields and Jake Ellenberger. Shields’ manager and father, Jack Shields, passed away earlier this week. There has been no word, however, on whether or not Jake will remain in the fight.

For more UFC News and UFC Rumors, follow MMAWeekly.com on Twitter and Facebook.