San Francisco 49ers' head coach Kyle Shanahan reacts in 2nd quarter against Detroit Lions during NFL game at Levi's Stadium in Santa Clara, Calif. on Sunday, September 16, 2018.
San Francisco 49ers' head coach Kyle Shanahan reacts in 2nd quarter against Detroit Lions during NFL game at Levi's Stadium in Santa Clara, Calif. on Sunday, September 16, 2018.
Photo: Scott Strazzante / The Chronicle Buy photo
With just more than two minutes left Sunday, after a pass from Jimmy Garoppolo landed in the hands of a Detroit defender, it appeared the 49ers would squander a 17-point, fourth-quarter lead in an epic collapse.