
Venus Williams takes a hit from her inhaler for the second time in her first set of her first game at the Australian Open. She was seen two other times taking a hit during the same set. Using a inhaler that much would likely take her over the limit a TUE would allow.
Then in her second round match:

Here is Williams going off for a toilet break of for treatment from her trainer. Players aren't meant to be allowed in with anything for either but there again she has what looks like an inhaler. She got beat substantially in the previous set. Then she comes out magically rejuvenated to win the match.
Imagine with 30/20/15/10k to go Petacchi being photographed nipping back to the team car to take a breath from his inhaler and the furore it would cause. Tennis is truly in a mess when the rules can be broken so openly in front of an audience.
Thanks to: http://tennishasasteroidproblem.blogspot.com/