Complex sentence: Liggan has made two Grand Slam doubles main draw appearances in her career; she reached the 2003 US Open round of 64 and the 2004 Wimbledon Championships round of 64.
Split into simpler sentences: Liggan has made two Grand Slam doubles main draw appearances in her career. She reached the 2003 US Open round of 64 and the 2004 Wimbledon round of 64.