Stefanos Tsitsipas' nightmare run of results continued at the ongoing ATP Masters 1000 event of the 2025 National Bank Open in Toronto, Canada. The Greek, returning to competitive tennis action at the hardcourt tournament after a brief spell on the sidelines nursing a back injury he picked up at Wimbledon, shockingly lost to the ATP No. 78. Unsurprisingly, several fans had their say on Tsitsipas' concerning situation in the aftermath of the result.On Wednesday, July 30, former No. 3 Tsitsipas, the No. 23 seed in Canada, locked horns with Christopher O'Connell from Australia. The Greek fired ten aces and even had eight break points, but managed to convert only two. Meanwhile, O'Connell was much more clinical in capitalizing on his six break points, converting four of them. It ended 6-4, 4-6, 6-2 in the Australian's favor, and marked Tsitsipas' third straight loss.ATP Toronto R2: O'Connell def. [23] Tsitsipas, 6-4 4-6 6-2 byu/pizzainmyshoe intennisFans on Reddit were quick to comment on Stefanos Tsitsipas' latest low. One took aim at the Greek's family. The ATP No. 30 found himself embroiled in controversy recently, choosing to part ways with Goran Ivanisevic after being publicly criticized by the iconic Croatian former player and present-day coach. He later roped in his father, Apostolos, as his coach once again, despite heated past conflicts between the two."He’s truly lost, brainwashed by his parasitizing family. Really sad for the guy actually," the fan wrote.Another fan opined that Ivanisevic was correct with his harsh assessment of Tsitsipas. The Croatian had lambasted the Greek in an interview following his mid-match retirement in the first round of the 2025 Wimbledon Championships, calling him 'physically and mentally unprepared' to play at the men's tennis elite level."Goran was right," the fan commented.Here are some more reactions from fans to Stefanos Tsitsipas' second-round loss to O'Connell at the 2025 National Bank Open in Toronto:"Tsitsipas is done…," stated one."Bros cooked," another added."By 2030, either Stef has been retired for at least 18 months or has done one of the greatest career revivals ever," another fan chimed in."I’m getting so mad but also sad. He needs to take time off to take care of his body because it’s not like he has the confidence to play slightly injured like a lot of other players do," weighed in yet another."It's not like I was saying it behind Stefanos Tsitsipas' back" - Goran Ivanisevic after end of brief collaboration with GreekGoran Ivanisevic (Source: Getty)In the aftermath of being removed from Stefanos Tsitsipas' team, Goran Ivanisevic defended his criticism of the Greek. According to Ivanisevic, his intention was not to insult Tsitsipas. He also claimed that he had communicated his feelings to the Greek before giving the interview that kickstarted the controversy."It was blown out of proportions, I didn’t insult him… I told him all of that, it’s not like I was saying it behind his back. Now it seems like you can’t say anything anymore. I said it honestly, to get a reaction. That’s how this generation is. Unfortunately, that’s how it is, everyone sees it," Ivanisevic told HRT.Stefanos Tsitsipas now has 19 wins and 14 losses on the ATP Tour so far this season, during which his best displays came at the Dubai Duty Free Tennis Championships, where he won the title after beating Felix Auger-Aliassime in the final.