Conversation so far:
What did Steffi play?
CANNOTANSWER.
what was her play style?
The main weapons in Graf's game were her powerful inside-out forehand drive (which earned her the moniker Fraulein Forehand) and her intricate footwork.
what else represented her play style?
Graf's technique on the forehand was unique and instantly recognizable.
why did she use this style?
As a result, she hit her forehand with exceptional pace and accuracy.
did she break any records?
Graf remains the only player, male or female, to have won the calendar-year Grand Slam.

Question: what year did she win the Grand Slam?
Self-contained rewrite: what year did Steffi win the Grand Slam?