In a battle of heavyweights that find themselves in must-win positions, Frank Mir (16-9 MMA, 14-9 UFC) meets Antonio Silva (18-6-1 MMA, 2-3-1 UFC) at UFC 184.

The new matchup was announced on Wednesday’s new edition of “UFC Tonight.”

Featuring a pair of championship matchups with UFC middleweight champ Chris Weidman facing Vitor Belfort and UFC women’s bantamweight title holder Ronda Rousey facing Cat Zingano, UFC 184 takes place Feb. 28 at Los Angeles’ Staples Center. The evening’s main card airs on pay-per-view.

Mir, a former UFC heavyweight champion, is mired in a four-fight losing streak, the longest such run of his career after never previously even losing two consecutive outings. Most recently, the 35-year-old came up short in a February 2013 meeting with Alistair Overeem, meaning Mir will have more than one full year off between appearances.

Meanwhile, “Bigfoot” Silva has also been winless in his past three fights, sandwiching a pair of losses to Andrei Arlovski and Cain Velasquez around a thrilling draw with Mark Hunt. The September loss to Arlovski was a devastating knockout, which was a surprising result after going five full rounds with the hard-hitting Hunt.

Despite their recent struggles, Silva sits at No. 7 in the latest USA TODAY Sports/MMAjunkie MMA heavyweight rankings, while Mir resides at No. 12, a testament to both men’s career accomplishments.

With the addition to the card, UFC 184 now includes:

Chris Weidman vs. Vitor Belfort

Ronda Rousey vs. Cat Zingano

Frank Mir vs. Antonio Silva

For more on UFC 184, check out the UFC Rumors section of the site.

(Pictured: Frank Mir)