Complex sentence: Logano took the lead on the following lap, leading the next seven laps until Allgaier and Ty Dillon wrecked in the tri-oval, which brought out the sixth caution of the race and forced a green--white--checker finish.
Split into simpler sentences: Logano took the lead the following lap, leading the next seven until Allgaier and Ty Dillon crashed in the tri-oval. This brought out the sixth caution of the race and allowed a green--white--checker finish.