The Buffalo Bills open training camp this week. The Buffalo News looks ahead with a four-part camp preview.
* Sunday's preview featured Mark Gaughan's story on the quarterback competition between Kevin Kolb and rookie EJ Manuel, Jerry Sullivan's column on the Bills hopes for the future riding on Manuel, Tim Graham's look at the young receiving corps, and Gaughan's scoop on each player.
* Tuesday's Part III was Gaughan's story on offensive coordinator Nathaniel Hackett and his father, West Coast offense guru Paul Hackett.
* Wednesday's Part IV is Skurski's story on defensive coordinator Mike Pettine and his father, Pennsylvania high school coaching legend Mike Pettine Sr.