Williams, who turns 32 on Sunday, had been with the team since last season. In 54 races at Kaulig Racing, Williams had no wins, no top-five finishes and six top 10s. He placed 18th in the points last year and is 19th in the standings this season. Williams has 240 career Xfinity starts with 17 top-10 finishes.

The NASCAR Xfinity Series season continues with the Pennzoil 250 at Indianapolis Motor Speedway. See Saturday's starting lineup here.

The NASCAR Xfinity Series will be racing on the short track at Iowa Speedway for the HyVee Perks 250 on Saturday (4:30 p.m. ET, The CW, MRN Radio, SiriusXM NASCAR Radio). ENTRY LISTS: Cup Series | Xfinity Series Ross Chastain will step back into the saddle of the No.