Ka'imi Fairbairn's 59-yard walk-off field goal allows the Texans to escape the Bills

Ka'imi Fairbairn hit a 59-yard field goal on the final play of the game to give the Texans a hard-fought 23-20 victory over the Bills.

Houston moves to 4-1 while the Bills fall to 3-2 with their second straight loss.

The Texans tried to slip the lead by blowing a 20-3 lead in the third quarter, with seven penalties for 65 yards in the second half, a CJ Stroud interception and a CJ Stroud fumble deep in his own territory after Robert Woods sent a punt to his own 2 and questionable playmaking and clock management in the final two minutes.

However, Fairbairn saved them by making his eighth of nine field goal attempts of 50 yards or longer this season. It was a two-play, 5-yard drive after the Bills punted from their own end zone following a Tommy Townsend punt that failed at the Buffalo 3 with 32 seconds left.

Josh Allen, who was missing leading receiver Khalil Shakir, was sidelined all day and had to complete one play after taking a hard hit in the fourth quarter that injured his chest and resulted in a concussion evaluation. He had the worst start of his career, going 1 of 11 for 24 yards, and finished the day 9 of 30 for 131 yards and a touchdown, a 49-yarder to rookie Keon Coleman.

Seattle's Stan Gelbaugh became the last quarterback to throw at least 30 passes and complete fewer than 10 of them when he went 9 of 31 against the Eagles.

The Texans outscored the Bills 425 to 276.

Stroud was 28 of 38 for 331 yards with one touchdown and the two turnovers. He wasn't the same after Nico Collins left with a hamstring injury after a 67-yard touchdown reception in the first quarter.

Stefon Diggs caught six passes for 82 yards against his former team.

Cam Akers ran for 42 yards and a touchdown on nine carries while Joe Mixon was sidelined for the third straight game.