1.   But the most highly charged issue the USGA is confronting involves woods, specifically whether thin-faced titanium woods produce what commonly is called a trampoline effect.

2.   Callaway said his company will continue to manufacture the Big Bertha titanium woods, but that the Steelhead will replace its Warbird line.

3.   One of its best known lines is the Big Bertha series of titanium metal woods, drivers and irons.

4.   Titleist drew some of the biggest crowds to see its two new titanium woods it was introducing at the show.