Norm Duke battled injury and bronchitis on the way to taking his third-career Professional Bowlers Tour major title, winning the PBA Denny's World Championship Sunday.

Duke defeated defending champion Ryan Shafer 202-165 to claim the $50,000 top prize and a two-year exemption on the PBA tour.

Duke beat Walter Ray Williams Jr 208-180 to advance to the championship, while Shafer beat amateur Andrew Frawley 204-158 in the first semifinal.

The PBA heads to Columbus, Ohio, for the Don Johnson Buckeye Classic this week.

If you are going to the U.S, Bowling Congress National Tournament, here is some insight on lane oil conditions.The lanes are being oiled 32 feet down the lane and are buffed to 40 feet. The heaviest concentration of lane oil is between board 14 from the right and board 14 from the left. That is located just inside of the second arrow from both sides.The lanes are completely cleaned and oiled three times a day, and squads with the freshest conditions are the 7 a.m. doubles and singles, the 2:30 p.m. and 8:30 p.m. team competition.

If you have a "short pin" on your lane, what is it? Answer at the end of the column.

It's nice to know what the lane oil pattern is like before competition. It can give you some insight as to how to play the lanes.Usually, though, bowlers are not aware of how the lanes were dressed. One way to find out how to play the lanes is to be observant of the other bowlers.Are they rolling the ball similar to the way you do? If so, where are they playing and are they hitting the pocket?Another way of determining lane conditions is to start with your favorite target on the lane and adjust from there during practice.

Right-hander Jeff Sinclair rolled his second-career perfect game during Casino League action at Sherwood Lanes Friday. Sinclair's other 300 game came in 2005 in the Butler County Bowling Association Tournament at Bon Aire Bowl.

• <B>Armco C:</B> Dave Fischer 280 (675), Trent Slater 260 (674), Tim Hoffman 254 (666)• <B>Fruit Loops:</B> Mark Undercuffler 267 (736), Chad Reges 243 (694), Carl Ealy 247 (691), Dave Reges 257 (681), Shawn Reges 244 (650)• <B>Automotive:</B> Pete Saul 269 (715), Gary Swidzinski 257 (737), Tony Pizer 690 series<B>Buckhorn:</B> Daryl Claypoole Jr 266 game, Jim McCune 225 (658), Dave Morgan 224 (653)• <B>Firearms:</B> Kristi Erkens rolled a 602 for her first 600 series. Her high game was 208. Chris Switzer 255 game, Mike Hilliard 671 series• <B>Kelly Automotive:</B> Gary Peters 266 (691), Dave Schrecongost 255 (724), Dave Miller 262 (723)• <B>Armco A:</B> Paul Love rolled his new high game of 243 and high series of 551. Steve Sofi 605 series, Jeremy Wagner 244 game.

The Butler County Bowling Association singles tournament is coming up on March 9 and 16 at Mars Lanes. Squad times are at 10 a.m. and 2 p.m.

"Short pin" is bowling lingo used to describe a pin that has fallen down and is rolling toward another pin that is standing, only to roll away just short of touching the standing pin and not knocking it over.