Liverpool recovered from the shock of going behind in the first minute to beat Tottenham Hotspur 2-1 at Anfield on Sunday and restore their six-point lead at the top of the Premier League.
Tottenham keeper Paulo Gazzaniga made a succession of superb saves to keep his side in front at halftime.
Son almost put Spurs ahead with an angled shot against the crossbar early in the second half but it was one-way traffic and Liverpool's pressure eventually told as Henderson fired home soon after -- his first league goal at Anfield since December 2015.
Mauricio Pochettino's side are without a Premier League win on the road since January and have slumped to 11th, eight points behind the Champions League places.
After the game, Liverpool manager Jurgen Klopp played down concerns over injuries to Salah (ankle) and Virgin van Dijk (dead leg), adding that he was pleased with the way his players responded to falling behind.
"I loved the game," Klopp said. "It's how to play against a really good side who always have a threat. We wanted to be special in the counter-press and it was excellent."