As tennis super agent Max Eisenbud put it after one of his clients, bubbly Chinese star Li Na, claimed her second grand slam crown in 2014, "winning that second one puts you in a different category."
Not many would dispute the words of Eisenbud, who also represents the wealthiest female athlete in the world, Maria Sharapova.
Players who win a grand slam for the first time often find themselves, in the short term, in one of two predicaments: Overwhelmed by the newfound fame and becoming the hunted rather than the hunter; or so buoyed that they remain or even exceed the lofty level they've just attained. Li, for one, struggled mightily in 2011 after winning the French Open.
Their views are echoed by Germany's Fed Cup captain Barbara Rittner, although she exercised caution.
"I think Angie is hungry for more," Rittner told CNN's Open Court show. "She's not slowing down. She will try to do this again but nobody knows how she's reacting to the media attention.
"Everything is changing a little bit but because she is so down to earth, normal people around her, great coach, I think we will hear quite some more about her."