Comeback trail: Mark Philippoussis (file photo).
Photo: Getty Images
Source: ABC News
Mark Philippoussis has made a low key return to the ATP Tour at the Challenger event in Dallas.
The former world number eight lost in the first round in straight sets to world number 159 Michael Yani.
It's the first ATP event Philippoussis has played since November 2006.
Australia's Carsten Ball won his first round match in straight sets.