Kansas City Chiefs quarterback Patrick Mahomes is on the verge of achieving something no quarterback has ever done before as he prepares to face off against the Denver Broncos on Sunday. With a win, Mahomes will secure a remarkable 13-0 record against the Broncos, a feat unmatched in the history of the NFL.

The 25-year old Mahomes has been in dominant form against the Broncos, leading the Chiefs to victory in all 12 of their previous encounters. This flawless record has highlighted Mahomes' prowess as one of the league's most formidable quarterbacks.

The only other quarterback to come close to Mahomes' undefeated streak is Otto Graham, who led the Cleveland Browns to a perfect 12-0 record against the Chicago Cardinals from 1950 to 1955. Graham's accomplishment stood for decades, making Mahomes' potential achievement even more remarkable.

While Mahomes' current record against the Broncos is impressive, he has his sights set on even greater heights. If he can continue his winning ways and extend his streak to 17 games, Mahomes would tie Bob Griese's record for the longest winning streak against any opponent. Griese, who played for the Miami Dolphins, achieved this milestone during a 13-year span from 1968 to 1980 against the Buffalo Bills.

Looking ahead, it remains to be seen whether Mahomes can surpass Griese's incredible record, as he would need to go undefeated against the Broncos until 2025. Nonetheless, the Chiefs quarterback remains focused on the immediate task at hand – securing a win in Sunday's highly-anticipated clash.

Mahomes' remarkable start to his career against the Broncos has not only solidified his status as an elite quarterback, but it has also cemented his place in NFL history. Regardless of the outcome on Sunday, Mahomes' unbeaten streak against the Broncos will forever be etched in the annals of football history. As the Chiefs take on the Broncos under the Mile High Stadium lights, all eyes will be on Mahomes as he seeks to make history once again.