Despite a former TCU player claiming that drug use was widespread on the team, only five players tested positive for marijuana in a Feb. 1 test, a source told the Fort Worth Star-Telegram on Thursday. Another 11 players had trace amounts of marijuana in their systems, a quantity that is within the margin of error for the test, the newspaper reported. Marijuana was the only drug detected, and 86 players tested clean, according to the report. Four players -- junior linebacker Tanner Brock, junior safety Devin Johnson, junior defensive tackle D.J. Yendrey and sophomore offensive tackle Tyler Horn -- were among 17 TCU students arrested on Wednesday in a drug sting. Read more: http://espn.go.com/dallas/ncf/story...rs-tested-positive-marijuana-according-report