The analysis of Trey Lance's performance will dominate the conversation surrounding the 49ers' 19-10 season-opening loss to the Chicago Bears on Sunday, but San Francisco didn't give much aid to the second-year quarterback with a flurry of mistakes.
"Not to take anything away from them, but I'm disappointed about some of the silly mistakes we did to ourselves," coach Kyle Shanahan said after the loss at Soldier Field.
The 49ers committed 12 penalties for 99 yards. Five of those penalties occurred in the fourth quarter as the team attempted to make a comeback.
Stay in the game with the latest updates on your beloved Bay Area and California sports teams! Sign up here for our All Access Daily newsletter.
"It’s tough to win when you do that stuff," Shanahan said. "We always talk about doing right longer, and I think today was exact opposite of that. Just look at the amount of penalties we had compared to them, the turnovers compared to them."
San Francisco also coughed up the ball twice -- a Deebo Samuel fumble and Lance interception -- compared to the Bears' lone turnover. Chicago committed just three penalties for 24 yards. Five of the Bears' 15 first downs were gifted by a 49ers penalty.
"The timing of those penalties were crucial," Shanahan said. "Two big third downs where we had them off the field. Had two stupid penalties that allowed them to keep going that led to 14 points."
All three of the Bears' touchdowns were aided by untimely San Francisco penalties.
San Francisco 49ers
Find the latest San Francisco 49ers news, highlights, analysis and more with NBC Sports Bay Area and California.
Chicago's first scoring drive was kept alive by a Dre Greenlaw face mask on a critical third-and-4. The penalty gave the Bears a fresh set of downs, and quarterback Justin Fields found former 49ers draft pick Dante Pettis wide open down the field for a 51-yard touchdown reception three plays later.
There were two key penalties on the Bears' second scoring drive. The 49ers stopped Chicago on third-and-9, but Charvarius Ward was whistled for defensive holding to keep the Bears' offense on the field. Three plays later, linebacker Azeez Al-Shaair hit Fields late and was flagged for unnecessary roughness. That moved the Bears from the 42-yard line to the 26-yard line, and soon after Equanimeous St. Brown found the end zone on an 18-yard reception.
RELATED: NFL Twitter reacts to Lance pick vs. Bears with Jimmy G memes
Midway through the fourth quarter when the Bears were back inside the red zone, 49ers defensive lineman Javon Kinlaw was called for a defensive holding penalty. That resulted in a first-and-goal for Bears from the 3-yard line, instead of facing a third-and-6 from the 7-yard line.
Khalil Herbert punched it past the goal line from three yards out.
"We did what we were supposed to do in the first half," defensive end Nick Bosa said. "We were stopping the run all day.
"Just killed ourselves with penalties."