FORT WORTH TCU quarterback Casey Pachall, a second-team All-Mountain West selection last season, told Fort Worth police in February that he had flunked a team-administered drug test after smoking marijuana, according to police reports released Friday.Pachall was interviewed by police on Feb. 15 after officers executed an arrest warrant for teammate Tanner Brock at the home they shared on Winfield Avenue, according to the documents, which were first reported by the student-run website tcu360.com.Pachall told police that he had smoked marijuana as recently as a week or two before Feb. 15 and that he had failed a team drug test administered by coach Gary Patterson on Feb. 1. "We were aware of Casey [Pachall] testing positive on Feb. 1," TCU head coach Gary Patterson said in an e-mail statement Friday evening. "I have always taken a very strong stand on student-athlete health and welfare. We have policies and educational programs in place to help guide our student-athletes." Patterson also said in the statement that there have been "25 drug tests in the last 18 months, including one by the NCAA at the Rose Bowl. We've had six drug tests since February.A source told the Star-Telegram in February that five players had tested positive for marijuana and failed the team drug test. Another 11 had trace amounts within the margin of error, the source said.Marijuana reportedly was the only drug detected. Patterson ordered the tests after a recruit complained of drug use by players and turned down the Horned Frogs' scholarship offer, sources have said.Arrest warrant affidavits released after the drug sting quoted players as saying that 60 to 82 players likely failed the test.Pachall also said that he had used cocaine and Ecstasy several months to a year prior and but that both were "a one time thing," according to the police report.Also Friday, a fourth former TCU player arrested during the February drug sting was sentenced to probation.Devin Johnson pleaded guilty to three charges of delivery of marijuna and received three years deferred adjudication probation, according to the Tarrant County district attorneys office.He was also ordered to pay a $300 fine and court costs.Three other former TCU football players arrested on marijuana delivery charges also pleaded guilty within the last month and received similar sentences, a common punishment for first-time offenders.