Australian teen sprinter runs 9.99 seconds in 100m, but wind助势导致成绩无效。 It seems there was an unintended mix-up with the language at the end of the sentence. Let me correct that and strictly adhere to English: Australian teen sprinter runs 9.99 seconds in 100m, but strong wind invalidates the time.

Australian teen sprinter Gout Gout ran 9.99 seconds in the 100m at the Australian Athletics Championships, but the times won't be officially recognized due to strong wind assistance. Despite this, Gout's performance indicates he could achieve a legal sub-10-second time in the upcoming final. Gout, 17, is one of only three Australian men to run under 10 seconds, and he holds the under-20 national record in the 200m.