Jack Draper urged to make huge change after singling out Carlos Alcaraz and Jannik Sinner

has been told that he must make a huge change if he wants to contend with the likes of Carlos Alcaraz and Jannik Sinner.

The Brit on Sunday and , saying he wanted to "shake" things up for them next year.

But Andy Roddick believes Draper will need to rethink his pre-season training regimen to achieve his goals.

Draper lifted his first trophy at ATP 500 level last week, downing Karen Khachanov to be crowned the champion in Vienna. He also broke into the world's top 15 thanks to his run.

It was the latest chapter of his breakthrough season. So far this year, the Brit has also clinched his maiden tour title in Stuttgart and reached his first Grand Slam semi-final at the US Open.

The 22-year-old is now hungry for more. After his latest title triumph, he said: "I'll go again for next year with even bigger motivation to really shake up those guys at the top of the game, the likes of Sinner and Alcaraz."

If he wants to close the gap with the best players, retired former world No. 1 Roddick says Draper will need to get his body used to playing in hot conditions - something he has often struggled with.

"The difference in training is making sure that your body can - you have to be prepared at a Slam," he said on his Served podcast.

"So, to get to this major contention that the question led with, your body - it's not going to go the distance every time. Your body has to be able and be prepared to play five hours, seven times, 14 days, in heat, in weather."

It's something Roddick went through during his own career and he wants to see Draper find a second, hotter training base to get used to the brutal conditions at tournaments like the Australian Open.

He continued: "Draper sweats like I did. Like, it's just disgusting, right? Like, we're both gross, sweaty individuals.

"He's going to have to find his stride on what the food looks like, being prepared physically. Does that mean he's training in London? Is there another base where he gets into heat?"

Recounting his old routine, the 2003 US Open winner explained: "My personal experience was, I would get my body ready doing sprints, lifting, doing the whole thing for a month straight in Austin.

"Every day, six days a week, seventh day rest, up at six in the morning, falling into bed at 9pm, rinse, repeat, being perfect with diet. My body's ready.

"We would stop in Hawaii on the way to Australia to get used to time zones, but I would literally play on this court in Hawaii that was made of lava rocks and would just cook myself for two weeks to get used [to the heat]."

And Roddick thinks it will make the difference when it comes to matching players like Alcaraz and Sinner. "To give myself a chance, you have to tick all those boxes because I promise you Sinner is; I promise you Alcaraz is," he added.

For now, Draper will be focused on finishing the year on a high at the Paris Masters. He extended his winning streak into Bercy, beating Jiri Lehecka 7-5 6-2 in the first round.