Complex sentence: Parker finished second at the 1993 UK Championships in 57.14, Gowry Retchakan, before winning the AAAs title, with a time of 58.14, earning selection for her second World Championships.
Split into simpler sentences: Parker finished second at the 1993 UK Championships in 57.14, behind Gowry Retchakan. She then won the AAAs title with a time of 58.14, earning selection for her second World Championships.