The 23-year-old Lamb enters his third season with a monumental weight on his shoulders, but carrying it is what it takes to be mentioned with the league’s best. Dallas Cowboys quarterback Dak Prescott admitted he would be watching the Los Angeles Rams host the Buffalo Bills for the NFL season-opener Thursday night. “Football is back,” he said. “Excited just to be able to watch a good game tonight.” While the game – which ended in a 31-10 win for Buffalo – didn’t quite live up to the hype that had been building for months, Prescott got to watch receiver Cooper…