Dhaka, May 1 -- As Jannik Sinner nears the end of a three-month doping ban that shook the tennis world, players are flocking to anti-doping authorities seeking advice on how to avoid positive tests due to contamination.

The Italian agreed a settlement with the World Anti-Doping Agency in February and began an immediate three-month suspension after authorities accepted that the anabolic agent clostebol had entered his system via massages from his physiotherapist.

"We have seen an increase of players asking for advice and assistance since the high-profile cases, and we are working on ways to make that easier," the ITIA told Reuters.

"There are lots of resources that are available to assist with checking supplements and medications. If pl...