Monday Night Football: 49ers lead Colts 24-17 at halftime

The 49ers scored on their first four possessions of the first half, taking a 24-17 lead into the locker room at halftime.San Francisco had touchdown drives of 69, 26 and 69 yards and a field-goal drive of 75 yards. Brock Purdy has three touchdown passes and nearly had a fourth on an incompletion to George Kittle that forced the 49ers to settle for a 25-yard Eddy Pineiro field goal.Purdy's touchdowns went for 22 yards to Demarcus Robinson, 2 yards to Christian McCaffrey and 11 yards to Kittle. He is 13-of-17 for 165 yards.The 49ers have 250 yards.McCaffrey has 11 carries for 67 yards and four receptions for 17 yards, and Kittle has five catches for 78 yards.The 49ers got a 36-yard kickoff return from Skyy Moore with 11 seconds left, and Purdy's 14-yard completion to Kendrick Bourne set up a 64-yard Eddy Pineiro field-goal try. The kick hit the crossbar.Philip Rivers, who came out of a five-year retirement last week to return at 44 years old, nearly matched Purdy throw-for-throw. He is 14-of-21 for 175 yards and two touchdowns. Alec Pierce caught both touchdown passes, his first multi-touchdown game, with receptions of 20 and 16 yards.Colts returner Ameer Abdullah fumbled the team's...