William Byron confident he can negotiate steep learning curve as Cup rookie Unknown 01:10 William Byron has been a quick study at every previous level of racing. He expects more of the same as he competes at stock car racing's highest level for the first time. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsDak Prescott's overall productivity shouldn't be hurt by his leg injury -- Dr. MattStaTuesday: Examining options at TE as Vikings move on from RudolphHIGHLIGHTS: Roope Hintz Assists Joel Kiviranta to Open the ScoringCowboys, QB Prescott finally have agreement on new contractBrewers hit three home runs in 13-7 win over GiantsESPN, NHL reportedly agree on seven-year deal