Berggren was the lead pit reporter for NASCAR on Fox from 2001-2012. He covered events in NASCAR's Sprint Cup Series from Daytona to Dover. In May 2012, Berggren announced he would retire after Fox's broadcast of the 2012 FedEx 400 at Dover International Speedway. Afterward he commented, "After the Fox portion of the year ends, I've always traveled to local tracks where I still enjoy sitting in the stands with a hot dog in one hand and a beer in the other, watching the local heroes. I can’t get enough of local-level racing so I'll do more of that now."