Lindsey Vonn watched her boyfriend, Tiger Woods, play at the 2013 Masters at Augusta National Golf Club in Georgia on Thursday, amid recent rumors that the relationship is already in trouble.

According to the Reno Gazette-Journal, Vonn was spotted at the prestigious golf competition wearing a sundress and wide-brimmed hat and sporting a knee brace on her right leg. Her presence on the golf course reportedly came as a surprise to spectators because Vonn is still recovering from surgery she underwent in February to repair a torn ACL and MCL in her right knee. The surgery was performed by U.S. ski team physician Dr. William Sterrett, nearly a week after Vonn crashed at the Alpine world championships in Austria, tearing ligaments in her knee and breaking a bone in her leg.

Since then, Vonn has attracted attention mainly for her new relationship with Woods. The pair announced that they were dating in March, through a Facebook post. “This season has been great so far and I'm happy with my wins at Torrey and Doral," Woods wrote. "Something nice that's happened off the course was meeting Lindsey Vonn.”

“Lindsey and I have been friends for some time, but over the last few months we have become very close and are now dating,” the golfer added. “We thank you for your support and for respecting our privacy.”

But the affair has already begun drawing rumors of turmoil only a month in, with a recent report by the Enquirer alleging that Woods might be cheating on Vonn with his ex-wife, Elin Nordegren. Nordegren and Woods divorced in 2010, after a major scandal in which Woods acknowledged cheating with over 17 different women, including strippers and alleged prostitutes.

“Tiger says that Lindsey is convinced he’s cheating on her with Elin,” a source told The Enquirer. “She feels betrayed and believes he is still in love with Elin. Lindsey’s not happy at all. She’s well aware that Tiger and Elin were having sex while they were discussing the possibility of getting remarried, and in her heart she’s convinced that they’re still at it.”

One of Woods’ ex-mistresses, a former porn star named Devon ‘XXX’ James, also voiced skepticism about the relationship, claiming that Vonn wasn’t Woods’ type and that he was probably seeing other women behind her back.

“You know when the pics came out of Tiger and his new girlfriend — somewhere, 15 other girls were going, ‘Huh? I thought I was his girlfriend!’ ” James told TMZ. “I thought he would have picked a woman who was more petite and not someone who is more muscular and has a bigger head than his. … Maybe his taste has changed since [ex-wife Elin Nordegren].

Nordegren is rumored to be dating energy mogul Chris Cline.