Despite the varying amounts of success Joe Burrow, Justin Herbet, Tua Tagovailoa and Jalen Hurts had as rookies in 2020, all have room for improvement in their second year under center in the NFL.

Grades and snap counts for every rookie who played in Week 1 of the 2021 NFL preseason, from San Francisco 49ers' Trey Lance to Indianapolis Colts' Sam Ehlinger.

Breaking down why the Green Bay Packers, Indianapolis Colts, Detroit Lions and Tennesee Titans have the best opening game scripts in the NFL.

Indianapolis Colts second-year quarterback Jacob Eason showed tons of reasons for optimism, while Sam Ehlinger led a slow-bleed comeback over the Carolina Panthers, 21-18, in Week 1 of the 2021 NFL preseason.

The Los Angeles Chargers started off their preseason with a 13-6 victory over the Los Angeles Rams.

The Kansas City Chiefs outlasted the San Francisco 49ers 19-16 Saturday night as the former Super Bowl foes kicked off their 2021 preseason campaigns.

The Las Vegas Raiders opened their preseason with a 20-7 victory over the Seattle Seahawks.

Tampa Bay Buccaneers fans likely left Raymond James Stadium feeling little inspiration after a 19-14 loss to the Cincinnati Bengals that checked almost every box for ugly, early-season football.

The Houston Texans entered preseason Week 1 as three-point underdogs to the Green Bay Packers, but they fought through adversity and walked out of Lambeau with a 26-7 victory.

It wasn't particularly pretty, but the Robert Saleh era in New York got off to the best possible start as the New York Jets beat the New York Giants 12-7 in preseason Week 1.

The Baltimore Ravens started their preseason with a 17-14 victory over the New Orleans Saints.

The Cleveland Browns opened their preseason with a 23-13 victory over the Jacksonville Jaguars.

The Minnesota Vikings chose to rest almost all of their starters, opening the door for the Denver Broncos to easily take control in the Week 1 NFL preseason outing.

Veteran offensive lineman Jason Peters is signing with the Chicago Bears.

Rookie quarterback Justin Fields overcame a slow start in an otherwise positive performance against the Miami Dolphins in preseason Week 1, adding more fuel to the fire that is the Chicago Bears' quarterback competition.

Rookie quarterback Justin Fields made his highly anticipated NFL debut for the Chicago Bears, flashing his skill set after a few mediocre drives.

After the Pittsburgh Steelers faltered down the stretch in 2020, the changes made by new offensive coordinator Matt Canada could be the key to Pittsburgh's offense returning to form in 2021.

Thanks to a 47-yard Matt Prater field goal as time expired, the Arizona Cardinals opened their preseason with a 19-16 victory over the Dallas Cowboys.