A farkon shekarar 1989, Muster ya zama dan Austriya na farko da ya kai wasan kusa da na karshe na gasar Australian Open, inda ya yi rashin nasara a wasanni hudu da wanda zai zama zakara, Ivan Lendl.
Tabbas, wani nau'i mai rikitarwa na jumla shine "A farkon 1989, Muster ya zama dan Austrian na farko da ya kai wasan kusa da na karshe na Australian Open kuma, jim kadan bayan haka, dan Austrian na farko da ya kasance a cikin manyan 10 na duniya. "