Per a Braves press release:
The Atlanta Braves today have added four players to their 40-man roster. They purchased the contracts of infielder Diory Hernandez and right-handed pitchers Todd Redmond and Stephen Marek. They also claimed left-handed pitcher Eric O'Flaherty off waivers from the Seattle Mariners.
No suprise on the first three, and it's a good sign for each that they are on a clear path to the majors. This O'Flaherty character on the other hand. He's your typical LOOGY, but has an emerging three-pitch mix highlighted by a good fastball. Still, this is a fairly weak move, similar to the T.J. Bohn pickup from Seattle in November 2006.
I'm excited to see Marek get a chance in the pen, though I think he'll need some time at triple-A. Diory, on the other hand, will likely turn some heads in spring training and push for a backup job. Redmond is still a year away, but injuries and a thin major league staff could push up his arrival time.