The short answer is "yes." The longer answer is that he is the only player in major league history to actually go by "Gustavo," and only five others have even had the name -- two as a first/given name (the best of whom was Gustavo Karim Garcia, sorry Gus Polidor), while three bore it as a middle name, the best of whom is probably Rainer Gustavo "Ray" Olmedo, who is 3-for-9 this year with the Reds between Triple-A stints.
So yes, Chacin's career (updated) 20-12 record outshines them all, including Garcia's 66 homers over 10 years. Hooray. Ah, but lest anyone accuse the Hall of Names of promulgating the "Gloomy Gus" stereotype, let's take a look ...




