Aaron Rogers, Green Back Packers quarterback, injured his left knee

GREEN BAY, Wis. – Aaron Rodgers got up, tried to put weight on his left leg and then collapsed to the ground.

The Packers quarter finally left Lambeau Field under his own power.

But after nearly 10 minutes in the test tent, the team's medical staff transported him to the locker room in the middle of the second quarter of Sunday's game against the Chicago Bears.

The Packers said it was a knee injury for Rodgers. His return is debatable.

Bears defensive end Roy Robertson-Harris appeared to fall on Rodgers' left knee after a second-quarter bag.

It's the same knee in which Rodgers tore his ACL in high school – a wound that was surgically repaired only in college.

As if the Packers home game was not hard enough before Rodgers' injury. Their attack was sent off the field just 2 minutes after the third consecutive quarter.

Rodgers was 3 of 7 passes for 37 yards and was sacked twice before leaving the game.

Former Cleveland Browns star DeShone Kizer, who was 0-15 as a rookie last season, replaced Rodgers by the Packers with a 10-0 record.

The first two Kizer streaks after Rodgers left were disastrous – both because of new Bears defenseman Khalil Mack. He ended Kizer's first set with a shoulder bag when he tore the ball out of the quarterback's hands. He then grabbed a pass on Kizer's screen and got 27 yards for a touchdown that gave the Bears a 17-0 lead.

Kizer's interception was his 23rd since the start of last season. No other quarter intercepted 20 interceptions, according to ESPN Stats & Information.

Last season, the Packers traded Brett Hundley, Rodgers' coach, against the Seattle Seahawks last month for a sixth round pick. Hundley started nine games – and only won three – last season after Rodgers broke his right collarbone.

In the first quarter, Rodgers completed just four passes for seven yards – his smallest total in the first quarter since he failed a pass at Week 17 of the 2014 Detroit Lions season.

At the end of last month, Rodgers signed a record $ 134 million contract extension over four years.