 Another round of green flag pit stops began on lap 203 when Truex made a pit stop ; Kenseth was the first of the leaders to pit the following lap . On lap 208 , Jeff Gordon became the new race leader after Biffle came into pit road . After pit stops , Biffle reclaimed the top position . On lap 220 , the third caution was given as Ambrose 's car suffered an engine failure . Jeff Gordon and Martin stayed out , while some of the leaders came to pit road . 
