World Short Course bronze medallist Emma McKeon will swim from lane 4 in the final of the girl?s 17/18yrs 100m freestyle tonight, with a heat time of 55.33 this morning. The Woollongong based McKeon will need to keep a close eye on Queenslanders Bronte Campbell and Brittany Elmslie who were the second and third fastest through in 55.57 and 55.76. Both Campbell and Elmslie will be heading to London for the Olympics later this year.