Undefeated UFC featherweight Tommy McMillen’s health has become a concerning topic after he was found in a distressing situation inside a nightclub bathroom on Sunday.

According to an exclusive TMZ report, responding officers from the Scottsdale police department found Tommy McMillen in an unresponsive condition in the bathroom of Cake nightclub in Old Town Scottsdale, Arizona, on November 8.

Police subsequently removed the 28-year-old from the bathroom. After spotting an unidentified “white, powdery substance” on the floor near him, officers administered Narcan (naloxone), a nasal spray used to rapidly reverse a suspected opioid overdose.

When McMillen remained unresponsive, the authorities quickly rushed him to a nearby local hospital. According to the Scottsdale Police Department spokesperson, the rising featherweight prospect was listed in stable condition at the hospital with no apparent life-threatening complications.

“A spokesperson for the Scottsdale Police Department tells TMZ… McMillen was transported to a hospital after he was found unresponsive in Cake,” the report noted. “He was in stable condition, and it does not appear there were any life-threatening complications when the police checked him into the hospital.”

For now, the authorities suspect a possible overdose might have been the reason behind Tommy McMillen’s collapse inside the nightclub bathroom. TMZ’s report also indicated that the 12-0 featherweight, who trains alongside former UFC bantamweight champion Sean O’Malley, had avoided any adverse effects from the incident.

As of the time of writing, no toxicology results or official cause of hospitalization had been released.

The entire situation is particularly surprising because Tommy McMillen has no prior record of a similar incident or a publicly documented history of substance-abuse problems.

Regardless, it’s particularly relieving that the UFC featherweight star, who is coming off back-to-back $100,000 bonus-winning performances, was discharged from the hospital without any lasting effects on his health. As further details continue to emerge, his and Sean O’Malley’s coach, Tim Welch, has also provided an update on his condition.

UFC star Tommy McMillen’s coach shares update on his health

Shortly after TMZ published its report on McMillen’s collapse and subsequent hospitalization on Thursday, the UFC star’s coach, Tim Welch, took to his social media to share an update on his condition.

“Tommy is completely ok and training yesterday,” Welch wrote on his Instagram, alongside an image of McMillen.

Welch’s reassuring message suggests that McMillen has made a full recovery and has already returned to training. The Red Hawk Academy head coach’s update further suggests that the UFC fighter hadn’t suffered any lasting damage to his health.

Welch’s update carries particular weight given that he has worked closely with McMillen for years.

The 28-year-old Montana native began training under Welch shortly after finishing high school. In 2017, McMillen parked his car outside Welch’s gym, Red Hawk Academy, in Peoria and relocated from Montana to Arizona to train under him.

The young fighter soon found himself surrounded by a talented group of training partners, including Sean O’Malley.

From there, the pair continued building their partnership, with McMillen gradually making his way to the UFC.

After competing in various promotions, McMillen finally received his breakout opportunity on Dana White’s Contender Series in 2025 and grabbed it with both hands. He defeated David Mgoyan via majority decision to earn his place in the UFC. 

However, the featherweight prospect wasted little time making an impression, knocking out two opponents in consecutive fights and earning post-fight bonuses along the way.

‘Gun’ recently delivered an all-time classic scrap against Marwan Rahiki at UFC Noche in September 2026. Both fighters entered the Octagon with undefeated records and proceeded to trade knockdowns throughout their three-round bout.

In the end, McMillen ultimately emerged victorious and improved his record to 12-0. Plus, ‘Gun’ also earned his third post-fight bonus in a row.

With Welch and McMillen’s partnership still going strong, it remains to be seen what more details emerge about the UFC fighter’s nightclub incident.