Nurse!

BYU's cheerleading coach says she was knocked out by a flying water bottle at the end of the Cougars' game against Utah on Saturday ... and now, she says cops are on the hunt to find the fan who threw it.

The object was apparently hurled in disgust by a Utah supporter who was upset over the way BYU had pulled off a stunning, come-from-behind, 22-21 victory over the Utes at Rice-Eccles Stadium.

In video obtained by the Deseret News, you can see just after BYU had kicked the game-winning field goal with just seconds left on the clock ... a water bottle came flying in from the stands and pelted Jocelyn Allan right in the face.

Armie Hammer’s 38th birthday gift was ... a vasectomy -- and if that doesn’t raise eyebrows, get this -- his mom picked up the tab.

The actor's mom, Dru, joined him on his 'Armie HammerTime Podcast,' explaining that while she knows loads of women would love to have his baby, as a Catholic, she’d prefer he wait until marriage.

Realistically, though, she knows that the ship has sailed -- he's already got 2 kids with his ex-wife -- so she gifted him the ultimate "just in case" gesture to avoid any surprises.

Tyreek Hill nearly didn't play in the Dolphins' big win Monday night due to a wrist injury that he says was made significantly worse by the cops who got physical with him during that now-famous September traffic stop in Miami.

The wideout made the revelation to ESPN's Lisa Salters ... just minutes before he was cleared to go in the Fins' "Monday Night Football" matchup with the Rams at SoFi Stadium.

Salters said on the game's broadcast that Hill told her he first sustained the ailment during training camp ... but once Miami-Dade officers ripped him out of his sportscar and threw him in cuffs back on Sept. 8 -- it got much worse.

Alfonso Ribeiro may be on the mend following his ankle injury at Disney World ... but that doesn't mean he's happy his nasty spill made headlines.

Photogs caught up with the "Fresh Prince of Bel-Air" alum at LAX, where he assured everyone he was up and walking again after rolling his ankle on a trolley rail at the most magical place on Earth.

However, when asked how he was feeling after seeing his accident play out in the press ... he confessed it made him "pissed off" ... indicating he had no interest in reliving the drama.

Jason Tartick experienced a near heart-stopping moment when he walked outside his home to take a call ... only to discover his neighbor sprawled on the ground, bleeding and unable to get up.

"The Bachelorette" alum shared the tale Monday ... his next-door neighbor, Bert, who Jason says is battling stage 4 bone cancer, had been lying on the ground for more than an hour -- and he immediately realized the situation was dire.

Jason says Bert was struggling to move, and also was bleeding from his head.

An Oklahoma City cop is facing backlash after he aggressively threw an elderly man to the ground during a traffic dispute ... reportedly causing a number of upsetting injuries.

In a new video making the rounds online ... the officer is seen issuing a traffic ticket to a 70-year-old man, named Lich Vu, and his wife in Oklahoma City. The scene starts off calmly enough ... with the officer explaining to Vu that he was being cited for an "improper U-turn," even though another driver struck his vehicle.

While Vu tries to explain himself, he is repeatedly interrupted by the officer ... leading the elderly man to tap the cop on the chest and say, "Shut up."

1:28 PM PT -- Sources close to Alfonso tell TMZ ... the ankle injury is indeed minor, and he's returning to production today to finish the special. We're also told he plans to participate in filming the 500th episode of "Dancing with the Stars" Tuesday.

Alfonso Ribeiro won't be "Dancing with the Stars" for a little while it looks like ... 'cause he injured his ankle while filming a dance number at Disney World -- and, TMZ has it on video.

The actor -- who hosts the reality dance competition show -- was filming an ABC holiday special at the Florida theme park when eyewitnesses tell us he stepped on one of the trolley rails and rolled his ankle.

Watch the video, taken in the aftermath of the misstep ... Alfonso's leaning heavily on 'DWTS' cohost Julianne Hough, seemingly afraid to put his weight on the ankle -- before a production team member runs over with a chair so he can sit in the street.

10:32 AM PT -- Great news ... Dylan Holloway is back at the St. Louis Blues' facility following his scary incident Tuesday night -- and it seems he could return to the ice as early as this week.

Holloway addressed media members Wednesday morning -- roughly 12 or so hours after he was rushed to the hospital -- and he looked to be in good spirits.

He told reporters the puck hit a major nerve in his neck, which caused him to lose consciousness -- but tests have all come back OK since.

The L.A. Dodgers fan who had a firework explode in his hand during a viral World Series celebration-gone-wrong last week has lost two of his fingers, his dad announced this week.

Kevin King Sr. told Fox 11 Los Angeles his 25-year-old son, Kevin King Jr., is now without the pointer finger and the middle finger on his left hand ... and has already undergone two surgeries to repair the damage the firework caused.

Unfortunately, King Sr. said King Jr. will require a third procedure soon.

Kamala Harris says she's always looking out for her own ... putting her rally on pause to direct medics to someone who needs help -- and, saying that's what leadership's all about.

The veep hosted a star-studded rally in Atlanta Saturday ... and, when she finally came out to speak, it seems she noticed a supporter who was in distress -- and, she immediately stopped her speech to help get medics to her.

Check out the clip ... KH points into the crowd and asks for a medic to hustle over -- before asking fans to part so the emergency medical team can get to the person in need.

Belal Muhammad's first defense of his UFC welterweight world title will have to wait ... as the champ has been forced out of his main event fight at UFC 310 after suffering a nasty bone infection.

The 36-year-old revealed the news Tuesday morning ... showing off the ailment before going under the knife, and we're not doctors, but it's safe to say a human toe probably shouldn't be that swollen!

"Caught a bone infection in my foot .. had to put a picc line in my arm for iv antibiotics the next 6 weeks with no physical activity," Belal said.

Olivia Rodrigo is opening up about her frightening fall through the stage during her Australian performance two weeks ago — saying the experience forced her to go to the hospital, but she was just fine.

The pop star sat down Tuesday with host Jimmy Fallon on "The Tonight Show" — revealing new details about the mishap during her Melbourne concert on October 14.

Video captured Olivia running across the stage and plunging through a large gap, then pulling herself out and addressing the crowd about what happened before resuming her show.

Utah Jazz forward Taylor Hendricks broke his leg and badly dislocated his ankle during his team's game Monday night ... and the gruesome injury was, unfortunately, all captured by TV cameras.

The horrifying moment happened in the third quarter of Utah's tilt with the Mavericks in Dallas, when Hendricks slipped and landed on top of his leg awkwardly.

The game's broadcast video shows once his full body weight crashed down to the floor -- his limb snapped underneath him -- and almost immediately, he began writhing in pain.

The Dodgers say Shohei Ohtani WILL play game 3 of the World Series -- despite partially dislocating his shoulder -- the question is, how effective can he actually be?! TMZ Sports talked to an orthopedic sports surgeon about the injury.

"Ohtani's apparent shoulder injury during the last game of the World Series was diagnosed as a shoulder subluxation," Dr. David Abbasi told us, adding, "That is not as severe as a shoulder dislocation."

FYI, a subluxation is where the ball (humeral head) of the shoulder joint partially slips out of the socket ... compared to a full dislocation where the ball fully slips out of the glenoid cavity.

Shohei Ohtani's injury stunned fans into silence at Dodger Stadium Saturday night ... but, it seems to excite some Yankees fans -- who broke into raucous applause while watching the injury on TV.

Video apparently taken inside a Bronx bar from right after the Dodgers slugger partially dislocated his shoulder during the team's 4-2 win over their rival to take a two-game lead in the seven-game set shows the gleeful atmosphere.

Watch the video for yourself ... we're not saying everyone's clapping here -- but, at least a few are clearly excited at the possibility Shohei will miss time, fist-pumping and clapping away while Ohtani's writhing on the ground.

Kate Beckinsale ain't letting a stunt double do all the dirty work in her new flick ... firing back against the suggestion by showing off her gnarly arm injury.

The actress shared several photos in response to an article that implied she wasn't doing many of her own stunts in her new action flick "Canary Black" ... simply taking over when it came to close-up shots.