Villa skipper Petrov praises Agbonlahor for last-gasp block
Stoke's Marc Wilson saw his header hit the bar and deflect clear off Agbonlahor.
"I've been saying a lot about Gabby, this season he has been improving his game. He is working very hard for the team," said Petrov.
"It is a very difficult place to come to. We battled really well today, we battled as a team."