Dalglish has praised Johnson for the way he has quietly gone about his business at left-back.
"Glen Johnson has been fantastic in the left-back position in the past three games. I don't recall anyone going past him," said the King.
"He was also involved in the first goal against Everton and was involved more defensively on Saturday. He did really well.
"For me, playing at left-back, he's doing us a favour. It's not really his chosen position. But he hasn't said a word against it, it's been no problem and he's just gone out and played.
"That's great and I think it just reflects his commitment and his attitude. The fact he is playing there and doing so well is a great credit to him. Also, he'll be thinking that Martin has done well and it would be unfair on him to leave him out."