NASHVILLE, Tenn. (AP) -Tennessee cornerback Cortland Finnegan is fast, very fast. And he refuses to even think about racing teammate Chris Johnson.

Not even for fun. Finnegan jokes that potential matchup would be like pitting a Ferrari against a Toyota Corolla, and he isn't going to race a Ferrari.

Johnson is the speedy second-year running back from East Carolina who is leaving defenders in his wake. He's leading the NFL in yards rushing and yards per carry with a whopping 6.9 average, and was the AFC offensive player of the week Wednesday for his franchise-record 228 yards rushing in last week's 30-13 win over Jacksonville.

Call it arrogant, but Johnson says he hasn't seen anyone match his speed yet in the NFL.