Tyler Reddick and his 23XI Racing team are looking for answers.

The NASCAR Cup Series regular season champion has not shown the same form thus far in the postseason. Reddick has an average finish of 19.5 through the first four races with one top-10 finish and 21 stage points. Last Sunday, he was an also-ran at Kansas Speedway — where he won last year — taking a 25th-place finish.

“ definitely concerned,” Reddick said in response to a question from RACER. “What got us to winning the regular season championship is car performance — with that good handling as well. They’re kind of hand in hand; you do have weekends where you have fast race car but it’s not going to handle as good. But for us, we’ve just been lacking performance and a good-handling car.”