​Former Iowa State football stars had a good showing in Week 3 of the 2026 NFL season.A few teams with former Cyclones remain undefeated, while other ex-ISU players are helping their teams get into good scoring positions as they continue to fine-tune their play heading into the second month of the NFL season.Here are a few top performers from Week 3. Brock Purdy, San Francisco 49ersPurdy is emerging as one of the top quarterbacks in the league this season, as the 49ers remain undefeated after Week 3.In a 36-30 win over the Arizona Cardinals, Purdy went 15-for-27 for 297 yards and three touchdowns. Two of the scores went to George Kittle, and the other to Mike Evans early in the second quarter.A connection we love to see 🙌📺: FOX pic.twitter.com/6CqyBmFama— San Francisco 49ers (@49ers) September 27, 2026Darien Porter, Las Vegas RaidersPorter and the Raiders are also 3-0 after their 35-27 win over the New Orleans Saints.Porter recorded a tackle in the win as part of a larger defensive unit that recorded 73 total tackles and two sacks.David Montgomery, Houston TexansMontgomery racked up 33 yards for the Texans in a close 19-17 loss to the Indianapolis Colts. So far this year, he has 103 total yards and two touchdowns, splitting time at running back with Woody Marks.Montgomery joined the Texans in the offseason from the Detroit Lions and was a 2019 third-round draft pick of the Chicago Bears.This article originally appeared on Des Moines Register: 3 former Iowa State football players who shined in NFL Week 3