Serena and Maria combined for 25 Grand Slam Finals, out of 40.
Azarenka was 50/50 in the QF stage of the Majors (surprising considering how dominate she was at her peak).
Lisicki's 4 chartings were all from Wimbledon.
Keys has a very high number of chartings considering she only regularly started playing the Slams in 2013( averages to 1 QF a year thus far in her career).
Clijsters and Henin each only played a handful of Slams this "decade".
More than half of Wozniacki's chartings were from the US Open(beyond a GS QF outside of the US just twice).
Sara Errani was a solid GS player for a while.
The first decade of this century started in 2001, the second one in 2011. But that's not how we use the decade spans because we stick to a visual logic of the numbers. There's no way to go against that logic. You won't make people think 1990 belongs to the eighties.
Who cares of hypertrophic weapons when the player on the court moves like music?