He won his first three bouts in the Palmetto Boxing Promotions organization before losing to UFC veteran Francis Carmont and Steven Cnudde, both via armbar submission.
Anundson returned to the Palmetto Boxing Promotions, defeating Wade Hamilton via rear-naked choke submission in the first round.
Anundson appeared as one of the contestants on The Ultimate Fighter 19, he faced future winner of the show Corey Anderson in the fight to get into the TUF house.
He defeated Rodney Wallace in the quarterfinals at Bellator 121 on June 6, 2014, via three-round unanimous decision to move on to the semifinals.
In the first round, Lins injured his left knee while attempting a punch, causing the referee to stop the bout in favour of Anundson.