Virginia pitcher Josh Sborz slips a pinch of chewing tobacco between his cheek and gum every now and then, even though the NCAA banned the substance 20 years ago, ''I enjoy the taste. I do it maybe once a month or every other week.'' Sborz said this week's death of Hall of Fame baseball player Tony Gwynn might give college players some pause. Whether Gwynn's death has any real impact is an open question and it comes amid some concerns: Baseball players acknowledging using spit tobacco at least once in the previous month rose from 42.5 percent in 2005 to 52.3 percent in 2009, according to the NCAA's quadrennial survey substance use trends among its athletes. About 15 percent of teams in each NCAA sport are asked to participate in the anonymous survey, with a total sample size of about 20,000 athletes. More...