Rod Stewart was seen bent over in distress onstage this Saturday, before drawing gasps of air from an oxygen tank to get through his concert.One week prior, the 81-year-old canceled a show in California while fans were waiting in line to enter, citing a respiratory infection that had spiraled into laryngitis.Less than 24 hours later, however, he flew private to Boston with two of his sons in tow to attend the FIFA World Cup match between Scotland and Haiti.Fans erupted in outrage on social media, with one fuming in his Instagram comments: 'This feels rather disingenuous, especially after your cancellation last night. Too ill to perform but okay to fly across the country for soccer?'This Saturday, he forced his way back to the stage in Salt Lake City, but in the middle of the show he had to gesture to his staff to fetch him an oxygen tank.When the device was brought to him, he pulled repeatedly from it, before informing the audience he had 'nearly f***ing fainted,' in footage obtained by TMZ. Rod Stewart was seen bent over in distress onstage this Saturday, before drawing gasps of air from an oxygen tank to get through his concert; pictured last month in Phoenix The octogenarian musical legend is currently on the North American leg of his farewell tour One Last Time, which he launched in 2024; pictured in April in New OrleansJoin the discussionShould stars prioritize loyal fans over personal pleasures when they're unwell and cancel shows?What's your view?While he was using the oxygen tank, the audience whooped supportively and one member of the crowd could be heard shouting: 'Take a break!'However, once he was finished taking his air, he turned to the audience and rasped: 'The show must go on,' to an explosion of applause.The Rhythm of My Heart hitmaker then confessed he had almost 'fainted' during the previous song, asking the audience: 'Would you mind if I sat down for this number?'Stewart took his seat on one of the steps leading up to the bandstand before proceeding with his concert, which was held at the Utah First Credit Union Amphitheatre in the Salt Lake City suburb West Valley.His canceled show was meant to take place last Friday, June 11 at the North Island Credit Union Amphitheatre in Chula Vista, a suburb of San Diego.That day, with fans already gathering outside the stadium, his team 'very regretfully' announced on social media that the concert had been scrapped.'He traveled to the venue and made every effort to perform, but on the advice of his doctors and following a diagnosis of an acute upper respiratory infection that has resulted in laryngitis, he is unable to take to the stage this evening.' Stewart issued his own statement on his Instagram page, along with a photo of him standing onstage in the vacant amphitheater. On Friday, June 11, he canceled a show in the San Diego suburbs due to ill health and posted an Instagram apology along with a photo of himself onstage in the vacant amphitheater'Well here I am in beautiful Chula Vista as the stage is being taken down around me,' he wrote. 'Following treatment, I'm feeling much better, but my voice is not.' Apologizing for his absence, he insisted he 'did everything I could to make the show happen tonight' and promised he would 'do my utmost to reschedule.' Less than one day later, he posted an Instagram video of him and his sons Alastair, 20, and Liam, 31, lounging on a private jet bound for Boston.Later that day, he was seen cheering among the live audience as Scotland triumphed in its first game of the World Cup, beating Haiti with a score of 1-0.The I Don't Want to Talk About It singer was met with a withering online response over what fans regarded as a 'disingenuous' about-face. Less than 24 hours later, however, he flew private to Boston with his son Alastair, 20, and Liam, 31, in tow to attend the FIFA World Cup match between Scotland and Haiti'I understand that shows sometimes have to be canceled, and if there was a legitimate reason, most fans would have accepted it,' wrote one. 'What’s hard to accept is seeing you apparently celebrating on a plane with friends less than 24 hours after thousands of people were sent home disappointed in San Diego.''I love Rod Stewart I always have I always will. This is the only thing I've ever disagreed with that he's done,' another shared.'People are so hurt all through this thread and it's understandable. I am so sorry to all of you in San Diego that were heartbroken and then have to see this video. In my opinion he should not have posted this video.'The octogenarian musical legend is currently on the North American leg of his farewell tour One Last Time, which he launched in 2024.'I’ve got 40-odd shows this year and that’s not really a lot,' he remarked last month during an interview on the British radio program TalkSport. 'And I’m touring the UK next year and doing the O2 and that will probably be it, I think.'