AMA Motocross Championship
For the 2010 racing season, Alessi signed once again with factory KTM. He sat out the entire 2010 Supercross season spending most of his time in Europe testing the brand new KTM 350SXF. Alessi debuted the 350CC machine at the opening round of the 2010 AMA Motocross Championship. He scored an impressive second moto win and took home a second overall finish. Unfortunately, Alessi struggled the rest of the summer to produce the results he experienced during the first round of the series. After scoring only one more top three overall finish (a second place during the tenth of twelve rounds) Alessi finished the series fifth overall.