Rousso joined the professional poker tour in April 2006, and by October was among the top 80 in earnings that year. In her first year of playing, Rousso had multiple in the money tournament finishes, including a seventh-place finish in a field of 605 at the $25,000 April 26, 2006 World Poker Tour (Season four) No-Limit Hold'em championship event, in which she earned $263,625 in prize money. By that time she was spending Tuesday through Thursday taking her law school classes, spending the rest of the week playing in poker tournaments and fielding endorsement offers from online poker clubs. On September 13, 2006 she won $285,450 with a first-place finish at the 173-entrant $5,000 no-limit hold 'em event at the 4th Borgata Open. At 2006 World Series of Poker she had three in the money finishes. She finished 80th in a field of 1068 in Event 4, $1,500 Limit Hold'em, 63rd in a field of 824 in Event 5, $2500 Short Handed No-Limit Hold'em, and she placed 8th of 507 in the Event 30, $5000 Short Handed No-Limit Hold'em event.