Spearing has filled in admirably for injured skipper Steven Gerrard and the Portugal international believes he is in the team on merit.
"Jay is a fantastic player and a fantastic teammate," Meireles told Liverpoolfc.tv.
"He has worked hard in training, he deserves his chance and he is doing well.
"He is a good lad off the pitch as well and I am pleased for him.
"I think it's good seeing some of the young lads getting a chance and for the future of the club it's important.
"I watch the reserves on LFC TV and there is a lot of quality."