Matusz posted a 7.94 ERA and 1.853 WHIP in 12 outings in June and opponents batted .327/.386/.673 against him. They batted .133/.188/.167 against him in July. Matusz credits side work with bullpen coach Dom Chiti for the improvement. "Actually, I've been working with Dom a lot, just working on kind of using my legs a little bit more and being more athletic out there on the mound and being strong," he said. "We've been doing some drills that have really been helping that out. "I obviously came off a rough month and it really was frustrating. It's never fun. You want to go out there and help your team win. To have a month like that is never fun. So, I made a huge effort to really work with Dom and get better and be able to be strong, be athletic and make good quality pitches." Matusz and Chiti spent a considerable amount of time in the video room, trying to figure out why the lefty didn't feel quite right on the mound. "It didn't feel like the ball was coming out explosively," Matusz said. "Just talking with Dom, talking about how I need to use the lower half a little bit better to get some life behind the ball. Working with him has really helped. I feel like the ball is coming out with some extra life this last month and I was able to attack with aggressiveness and confidence." The Orioles added a fourth left-hander to the bullpen when trading for Andrew Miller, who retired the Mariners in order yesterday on 10 pitches. He looks like the same dominant reliever as the one who left Boston. "I think what it does is it makes this team better," Matusz said. "Look at Andrew's numbers over there in Boston, doing it in the American League East. Putting that in our bullpen is only going to make us a better team. "He gives us some more left-handed options later in the game. Andrew even has success with right-handed hitters, so it gives us that option. It makes our team better." Matusz, Britton, Miller, Darren O'Day, Tommy Hunter, Brad Brach and T.J. McFarland. Does this bullpen stack up against any other in baseball? "Absolutely," Matusz replied without hesitation. "Oh yeah. Any day of the week."