Wren said the Braves will make a roster move on Friday, when Ayala is expected to join the team for the start of a series in Washington. Ayala's career ERA is 3.37. The Atlanta Braves bolstered their bullpen depth Wednesday by acquiring right-handed reliever Luis Ayala from the Baltimore Orioles for a minor-leaguer. Wren said he had some discussions about acquiring Ayala in Spring Training. Ayala restores experience and depth to an Atlanta bullpen that is expected to be without left-hander Jonny Venters for at least another month. The Orioles finally opted to make this deal that allowed them to keep Rule 5 selection T.J. He is 1-0 with a 9.00 ERA in two appearances this season, after going 5-5 with a 2.64 ERA and one save in 66 games for the Orioles in 2012. Venters received the injection after he was examined by Dr. James Andrews, who performed ligament-replacement surgery on Venters' elbow in 2005.