MADISON, Wis. -- A former University of Wisconsin football player has been charged with threatening the lives of former Badger coach Barry Alvarez and tennis star Maria Sharapova.

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Leonard Taylor Jr., 32, of Indianapolis, faces one felony count of stalking and one misdemeanor count of telephone harassment.

Investigators said that these calls are directed at Alvarez, his former coach but now the school's athletic director. Taylor played for the Badgers from 1995 to 1998.

A criminal complaint said that Taylor left multiple "bizarre" messages on Alvarez's work voicemail in September. Police told him to stop, but last week he left more than 20 messages laced with profanity threatening Alvarez, Sharapova and their families.

Police said that Taylor started calling Alvarez around October 2007 leaving a series of voice messages. They said that they believe Taylor left as many as six to seven calls a night -- not threatening -- but described as bizarre.

The calls started again when the Badgers football season began this fall, they said.

UW police contacted Taylor on Sept. 16 about the calls and Taylor was apparently apologetic and said he would stop calling. However, during a two-day span last week, the calls peaked, laced with vulgar language and direct threats.

According to the criminal complaint, one of the messages said: "I just want to look at you one (expletive) last time before I pull the (expletive) trigger, Barry."

Online court records didn't list an attorney for Taylor. The complaint said that Taylor's father told police his son, who lives in Indiana, has been diagnosed as schizophrenic and hasn't taken his medication for weeks.

The UW athletic department isn't commenting on the charges against Taylor.