_On Sunday, teams can sign undrafted rookies.
_On Wednesday, the league year officially begins, so free agency opens in full, and all training camps will open with a 90-man roster limit; activities that day will be limited to physicals, meetings and conditioning. All clubs must be under the salary cap.
_Players can practice without pads next Thursday and Friday.
AP Pro Football Writers Barry Wilner and Howard Fendrich, AP Sports Writers Teresa Walker, Charles Odum, John Wawrow and Rachel Cohen, and AP freelance writer Amy Jinkner-Lloyd contributed to this to report.
Follow Howard Fendrich at http://twitter.com/HowardFendrich
Follow Barry Wilner at http://twitter.com/wilner88
Follow Paul Newberry at http://twitter.com/pnewberry1963
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