 He also competed in the Bantamweight division of Bellator MMA before retiring following another hand injury.A professional fighter since 2007, McDonald fought mostly in regional promotions in his home state of California before signing with Zuffa in 2010.McDonald started training in kickboxing at the age of ten, turned to mixed martial arts at 13, started his amateur career at 14, and turned professional at 16 in 2007.