Cintron is probably as familiar as a name to most of you as pretty much any Nats minor league signing will ever be. He was really good in 2004, hitting .317/.359/.489. Too bad his career numbers and his numbers since 2004 both stink. He's kinda like Cristian Guzman except without the multiple good seasons.
Grezlovski is about as random as a signing as you'll see. He has spent the entire Nationals existance in the independent Atlantic League (see, isn't that a nicer way to say "he spent 2005-08 in the Atlantic League?") and the six prior seasons in a mix of independent leagues and low-level minor leagues with the The Angels Angels of Anaheim. He's got decent overall numbers, but he is also 32 years old without any experience above AA. So we're talking organizational depth.
A side note-before it gets buried, check out Chris Kay's guest post from Saturday. Should be a fun feature from here on out.