The 24-year-old kicker drilled a 53-yard field goal as time expired to give Chicago a 16-14 win over the Broncos at Mile High Stadium.
Chicago needed the game-winning kick after the Broncos scored a touchdown with a little more than 30 seconds to play. Instead of going for the tie, Denver elected to go for two and, after a series of penalties, converted the attempt and took the lead when Joe Flacco found Emmanuel Sanders in the end zone.
The Bears appeared to be heading for a loss but Mitchell Trubisky completed a 25-yard pass to Allen Robinson. Chicago then called timeout with one second left, setting up Pineiro’s heroics.
Chicago improved to 1-1 with the win while the Broncos dropped to 0-2.