The new era attracts the Chiefs, the 49ers face in the Super Bowl

MIAMI Kansas City Chiefs chase your first Super bowl title in 50 years on sunday when they face the San Francisco 49ers in a championship clash prepared to usher in a new era for the NFL .

About 100 million Americans are expected to tune in for the biggest event on the US sports calendar. UU., Which begins in Miami Hard Rock Stadium at 6.30 p.m. (2330 GMT).

The eagerly anticipated showdown could mark a changing of the guard for the NFL 's quarterback hierarchy as the curtain comes down on the league's 100th season.

With Tom Brady and the New England Patriots failing to reach the Super bowl for the first time since 2016, the stage is set for the Chiefs' Patrick Mahomes to crown his emergence as the best quarterback in the league.

The gifted 24-year-old Texan could become the second youngest quarterback to win a Super bowl if he leads the Chiefs to victory in only his second full season as a starter.

Mahomes, who became the second quarterback in history to accumulate 5,000 aerial yards and 50 touchdowns in a season in 2018, has cut a relaxed figure during this week's accumulation.

I will go out and try to have fun and play as I have played throughout the season, Mahomes said.

It's early in my career and I'm excited to go out with my brothers and try to win.

Attempting to frustrate Mahomes and the Chiefs, who start as narrow favorites according to Las Vegas bookmakers, are a 49ers team chasing a record-equalling sixth Super bowl .

Led by the 28-year-old quarterback Jimmy Garoppolo -- who won two Super bowl rings during his stint as a back-up to Brady in New England -- the 49ers boast a fearsome defense which will attempt to knock Mahomes out of his stride.

Garoppolo has a wide variety of weapons at your disposal.

Against the Green Bay Packers in the NFC Championship game, the 49ers flew their opponents with a fearsome ground game that saw racer Raheem Mostert rush for four touchdowns and more than 200 yards.

The 49ers are also bound to have a few offensive tricks up their sleeve as they prepare under the guidance of head coach Kyle Shanahan, one of the most innovative minds in the NFL.

A win on Sunday would see the 49ers coach emulate his father Mike Shanahan, who won back-to-back Super bowl s with the Denver Broncos in 1998 and 1999.

But Shanahan's training magic can be debatable if the 49ers' defense cannot contain Mahomes and a Boss offensive that bristles with receiver Tyreek Hill's rhythm and power in the form of tight end Travis Kelce.

The Chiefs have averaged 43 points per game in two playoff games, and during the regular season they averaged a little more than 28 points per game.

Kansas City's ability to produce devastating scoring explosions was shown in its playoff game against Houston last month, when they returned from a 24-0 deficit to win 51-31.

They also began slowly in the AFC Championship game against the Tennessee Titans, losing 17-7 before finishing 35-24 winners.

The Chiefs are very aware that granting an early advantage against the 49ers and their stingy defense could well be fatal.

Obviously we want our boys to get out and have a faster start, said Chief Offensive Coordinator Eric Bieniemy. You will certainly never want to see a team with 24 points.

Meanwhile, a victory for Kansas City would be the supreme glory of the distinguished career of Chiefs coach Andy Reid.

A popular figure known affectionately among his players as "Big Red", the 61-year-old Reid is the most successful coach never to win a Super bowl , having just missed out when his Philadelphia Eagles lost to New England in 2005.

He has had an incredible career, Mahomes said about Reid. Obviously, we want to win this game, the big one, to put that on your resume.