Career
Tirabassi also holds multiple Venezuelan championship titles and national records in both the long-distance freestyle (200 and 400 m), and freestyle relay events. Tirabassi competed for Venezuela in the men"s 400 m freestyle at the 2008 Summer Olympics in Beijing. Leading the first heat from the initial length until the 250-metre lap, Tirabassi tried to hold on with Norway"s Gard Kvale towards the final turn of the race by just half a body length apart from each other, but could not catch him immediately to regain his lead and end up instead with a runner-up time in 3:53.26.
Tirabassi failed to advance further to the top eight final, as he placed thirty-first overall in the prelims.
At the 2009 FINA World Championships in Rome, Italy, Tirabassi set a Venezuelan record of 1:48.51 to touch the wall first on the tenth heat of the 200 m freestyle. At the 2011 Pan American Games in Guadalajara, Mexico, Tirabassi posted a time of 1:52.31 to round out the field in last place on the same distance, but missed his record by nearly four seconds.