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By Steven McIntoshEntertainment reporter at the Toronto Film Festival The film tells the story of the famous Wimbledon men's final of 1980, and stars Shia LaBeouf and Sverrir Gudnason as McEnroe and Borg respectively. Welsh actor Scott Arthur, who plays McEnroe's tennis partner Peter Fleming in the film, described the pair's duel as the "perfect rivalry". "They were kind of the first rock star tennis players," he told BBC News. "They had a swagger about them. Borg was almost like a Beatle. Everywhere he went, people were obsessed with him. "Then you had McEnroe, who was more of a hot-headed fiery tennis player, didn't always play by the rules." Borg/McEnroe is one of several sports-based films attracting attention this year. I, Tonya - starring Margot Robbie as figure skater Tonya Harding - is hot property at the festival, alongside Battle of the Sexes, which sees Emma Stone portray former tennis world number one Billie Jean King. Scott said: "Tennis is a sport where there's so much that comes with the way that you go about your game." "Being respectful to your opponent, treating a loss the same as a victory… so to have Borg and McEnroe competing against each other, it was the perfect rivalry really. "What's amazing is that after their rivalry they became best friends. Borg was the best man at McEnroe's wedding." Borg/McEnroe: Press conference Here's what some of the stars said about the film: Scott said preparing for the role involved spending more time in the park and, unfortunately, less time in the pub. "About six weeks before we started filming, I got a call saying 'You need to make sure that you're training every day, going running and not drinking beer'," the 28-year-old explained. "Because if you're playing a tennis player you need to look as lean as possible, so that was probably the hardest part of everything, going running, not drinking beer and making sure I was watching my diet." Scott is no debutant, but described Borg/McEnroe as "the most high profile thing I've done, by far". "I did a film called Bridgend, based loosely on the Bridgend suicides [a spate of suicides involving young people in Wales]. "That got a bit of press, but it's nothing on the scale of Borg/McEnroe, so this is the first real big thing that I've done. "So to be walking on a red carpet is a childhood dream. I'm trying to just stay on my feet, not get too swept up by it all." The film, which is due to be released in the UK on 22 September, is certainly turning heads at Toronto, although its first reviews were mixed. The Guardian awarded it two stars, with Peter Bradshaw writing: "This tennis film feels like a two-hour baseline rally, and it's not just the rackets that are made of wood." Writing in IndieWire, David Ehrlich said: "If not for LaBeouf, Borg/McEnroe would have nothing to offer that you couldn't get from simply watching a broadcast of the 1980 Wimbledon Men's Final." But Scott said he hopes the film will help shed light on the lesser known aspects of the famous tennis rivalry. "I want audiences to come away having a bit of empathy for them both, to understand how much dedication and hard work it takes to become as brilliant as Borg and McEnroe are," he said. "I want people to leave thinking 'I didn't know about that'. You really see the relationships between Borg and his wife, or John and his Dad, and so you get all of that and I want people to understand how much time they're putting in and how lonely they are." Read more: Follow us on Facebook, on Twitter @BBCNewsEnts, or on Instagram at bbcnewsents. If you have a story suggestion email entertainment.news@bbc.co.uk.
Output:
This year's Toronto Film Festival has officially opened - with tennis drama Borg/McEnroe kicking off proceedings.