On-loan Manchester United goalkeeper Sam Johnstone was the hero for Aston Villa as he starred in the goalless draw against Brentford.
The Bees are still without a win in the Championship but were the better side throughout the match.
Villa struggled to create clear-cut opportunities and had to rely on Johnstone to keep a clean sheet and earn a point.
The stopper twice kept out Ollie Watkins, while Nico Yennaris, Yoann Barbet and Neal Maupay also went close.
Struggling Bolton fell to their fourth defeat of the season as a Britt Assombalonga double and a Marvin Johnson strike handed Middlesbrough all three points.