UFC 332 adds multiple bouts, with Johnny Walker set for a heavyweight debut vs. Mick Parkin

UFC 332 is beginning to take its final shape, with the promotion adding several new bouts to the card. The most notable change is the matchmaking of Johnny Walker, who will step into the heavyweight division for the first time in this matchup, facing Mick Parkin in what has been presented as a key attraction on the slate.

Walker’s heavyweight debut is the kind of promotion that can reshape how a division evaluates its incoming talent. In the UFC’s flyweight and light heavyweight eras, Walker built a reputation through power and an ability to create chaos during exchanges, and the move up in weight immediately raises new questions about timing, footwork, and endurance against bigger, heavier opponents. Against Parkin, the matchup sets up a test of whether Walker’s style translates cleanly to heavyweight.

For Parkin, the fight represents a significant opportunity to measure himself against a well-known name making a division jump. Parkin’s role on the card is tied to how the UFC typically uses debut-heavy matchups, where the bout can quickly clarify whether the incoming fighter is ready for heavyweight competition right away or whether adjustments are required.

Beyond the headliner-level intrigue around Walker and Parkin, Yahoo Sports reports that the event continues to accumulate announcements across multiple weight classes, suggesting UFC 332 is trending toward a deeper card than what was previously expected. At the same time, the report notes that the promotion has not yet made official a headlining attraction, which means fans could still see further movement as the event approaches.

The UFC has a history of using multi-bout announcement waves to build momentum toward a pay-per-view or marquee network slot, and UFC 332 appears to be following that pattern. With a heavyweight debut and additional pairings now in place, the question becomes what the still-unconfirmed top billing will be and how it will affect the pacing of the evening, especially if the promotion chooses a championship or title-adjacent matchup.

As fight-night deadlines get closer, the main thing to watch will be whether Walker’s heavyweight introduction comes with clear early indicators of how he handles size and pressure. Equally important is whether the rest of the card settles into a mix that supports a clean progression of contenders, since the UFC often designs event lineups to create short pathways from impressive performances to ranked positions.