Casartelli was a well known manager in his first era. He attended many Hattrick Meetings, including the very first one in Utrecht, and had his own radioshow with Medivh on HT-Radio. The show had over a hundred listners on sunday evenings and was known for their jingles and telephonic interviews with other managers.
He tried to become national coach but gave up after being the runner-up for three times and two more third places.
Casartelli, who started by the nickname of "Broodrooster82", is also known for making the Dutch translation of Hattrick back in 2002.
He made up all Dutch words for every rating, specialty and attribute in the game. The dutch translation started in april 2002 and was finished in october later that year.
After finishing the translation, he and his friend Medivh became the first users in Hattrick with the LA-Prefix. Something that Medivh had come up with.
In 2007, Casartelli was banned from Hattrick for bidding too much when he tried to purchase his former youth squad pull and superstar Kornel ten Berge. He made a comeback in 2012 and is still playing Hattrick.