Kellen Winslow Jr. has been released from jail and will begin house arrest -- after posting bail in his rape case ... TMZ Sports has learned.
The ex-NFL star was released from Vista Detention Facility in San Diego on Friday -- one day after the judge in the case set bail at $2 million.
Per the terms of his release, Winslow will be on house arrest and must wear a GPS device at all times.
Winslow was initially arrested on suspicion of raping 2 women in the San Diego area earlier this year.