"Pawapuro" (パワプロ) is an abbreviation of the main series title, "Jikkyou Powerful Pro Yakyuu" (実況
パワフル
プロ野球). It should probably be "Power Pro," since it's based on English words, but Konami has a tendency to romanize the titles straight from the sounds:
http://www.konami.jp/pawa/2010/
I poked around a bit on Konami's site and couldn't find any English rendition of パワプロクン as "Pawapurokun," but the
Japanese Wikipedia article for the series gives it, so it wouldn't surprise me if it's there somewhere.