Gerrard says the fullback is among the best in the world.
"It was a special goal from Glen and he's a player in form," Gerrard told liverpoolfc.com. "He's been fantastic for us since the start of the season. It's no shock to me. I play for Liverpool and England with him.
"His consistency levels, and not just this season but for a long time now, have been very good.
"He's certainly up there with the best right-backs in the world."