Petrov believes it is the sign of the ultimate team player when a footballer is unselfishly prepared to produce no-frills performances.
"Westy has been great," Petrov told the Birmingham Mail. "Some people watching him in his position don't see what he's doing. He gives the security to the team.
"He does the hard work. He does the dirty work. He is there for the team.
"Sometimes fans don't see that. But, I tell you what, your mates appreciate it. They know what you have done. Some supporters look to who crosses it, who scores, who saves a goal. People can forget about his role.
"He is always there. When the other team breaks, he is there. He makes sure the defence is protected. He works his socks off to help his mates. Villa must be happy with what he is doing, how he plays and what he does for the team."
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