Following is the NFL Offseason Workout Program calendar for 2015. Voluntary offseason workout programs are intended to provide training, teaching and physical conditioning for players.The NFL Offseason Workout Program calendar (dates are tentative and subject to change):ARIZONA CARDINALSFirst Day: April 20OTA Offseason Workouts: May 19-21, May 26-28, June 1-4Mandatory Minicamp: June 9-11Rookie Minicamp: May 8-10ATLANTA FALCONSFirst Day: April 6OTA Offseason Workouts: May 26-27, May 29, June 2-3, June 5, June 9-12Voluntary Minicamp: April 27-30Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10BALTIMORE RAVENSFirst Day: April 20OTA Offseason Workouts: May 27-29, June 2-4, June 8-9Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-9BUFFALO BILLSFirst Day: April 6OTA Offseason Workouts: May 26-27, May 29, June 1, June 3-4, June 8-11Voluntary Minicamp: April 28-30Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10CAROLINA PANTHERSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-9CHICAGO BEARSFirst Day: April 13OTA Offseason Workouts: May 27-29, June 1-3, June 8-11Voluntary Minicamp: April 28-30Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10CINCINNATI BENGALSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10CLEVELAND BROWNSFirst Day: April 20OTA Offseason Workouts: May 26-27, May 29, June 1-2, June 4, June 8-9, June 11-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10DALLAS COWBOYSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-10Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10DENVER BRONCOSFirst Day: April 13OTA Offseason Workouts: May 27-29, June 1-2, June 4, June 15-18Voluntary Minicamp: April 28-30Mandatory Minicamp: June 9-11Rookie Minicamp: Ashton Hagans Jersey May 8-9DETROIT LIONSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10GREEN BAY PACKERSFirst Day: April 20OTA Offseason Workouts: May 27-29, June 2-4, June 9-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-9HOUSTON TEXANSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 1-2, June 4, June 8-9, June 11-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10INDIANAPOLIS COLTSFirst Day: April 20OTA Offseason Workouts: May 18-20, May 26-28, June 1-4Mandatory Minicamp: June 9-11Rookie Minicamp: May 8-10JACKSONVILLE JAGUARSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 1-2, June 4, June 8-9, June 11-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10KANSAS CITY CHIEFSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 9-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 16-18MIAMI DOLPHINSFirst Day: April 20OTA Offseason Workouts: May 26-27, May 29 June 1-2, June 4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10MINNESOTA VIKINGSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10NEW ENGLAND PATRIOTSFirst Day: April 20OTA Offseason Workouts: May 26, May 28-29, June 1, June 3-4, June 8-9, June 11-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10NEW ORLEANS SAINTSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 15-17NEW YORK GIANTSFirst Day: April 20OTA Offseason Workouts: May 27-29, June 1-2, June 4, June 8-9, June 11-12Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10NEW YORK JETSFirst Day: April 6OTA Offseason Workouts: May 19-21, May 26-28, June 2-5Voluntary Minicamp: April 28-30Mandatory Minicamp: June 9-11Rookie Minicamp: May 8-10OAKLAND RAIDERSFirst Day: April 7OTA Offseason Workouts: May 19-21, May 26-28, June 1-4Voluntary Minicamp: April 21-23Mandatory Minicamp: June 9-11Rookie Minicamp: May 8-10PHILADELPHIA EAGLESFirst Day: April 20OTA Offseason Workouts: May 26-28, June 1-2, June 4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10PITTSBURGH STEELERSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10ST. LOUIS RAMSFirst Day: April 20OTA Offseason Workouts: June 2, June 4-5, June 8-9, June 11, June 15-16, June 18-19Mandatory Minicamp: NoneRookie Minicamp: May 8-10SAN DIEGO CHARGERSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 1-3, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 15-17SAN FRANCISCO 49ERSFirst Day: April 7OTA Offseason Workouts: May 19-21, May 27-29, June 1-2, June 4-5Voluntary Minicamp: April 28-30Mandatory Minicamp: June 9-11Rookie Minicamp: May 16-18SEATTLE SEAHAWKSFirst Day: April 20OTA Offseason Workouts: May 26-27, May 29, June 1-2, June 4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10TAMPA BAY BUCCANEERSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 8-10TENNESSEE TITANSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 1-2, June 4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 15-17WASHINGTON REDSKINSFirst Day: April 20OTA Offseason Workouts: May 26-28, June 2-4, June 8-11Mandatory Minicamp: June 16-18Rookie Minicamp: May 15-17As per Article 21 of the Collective Bargaining Agreement, each club's official, voluntary nine-week offseason program is conducted in three phases:Phase One consists of the first two weeks of the program with activities limited to strength and conditioning and physical rehabilitation only.Phase Two consists of the next three weeks of the program. On-field workouts may include individual player instruction and drills as well as team practice conducted on a "separates" basis. No live contact or team offense vs. team defense drills are permitted.Phase Three consists of the next four weeks of the program. Teams may conduct a total of 10 days of organized team practice activity, or "OTAs". No live contact is permitted, but 7-on-7, 9-on-7, and 11-on-11 drills are permitted.Article 22 of the Collective Bargaining Agreement stipulates that clubs may hold one mandatory minicamp for veteran players. This minicamp, noted below, must occur during Phase Three of the offseason program. Head coaches hired after the end of the 2014 season were entitled to conduct an additional voluntary veteran minicamp. Any voluntary minicamp for veteran players must have been conducted prior to the NFL draft (April 30-May 2), but no earlier than week three of the club's offseason workout program and after at least one week of the two weeks of Phase One activities that the clubs may hold pursuant to Article 21. This year, seven clubs held voluntary veteran minicamps, as noted below.Each club may hold a rookie football development program for a period of seven weeks, which in 2015 may begin on May 11. During this period, no activities may be held on weekends, with the exception of one post-NFL draft rookie minicamp, which may be conducted on either the first or second weekend following the draft. The dates of the post-draft rookie minicamps are noted below.For specific information and detailed offseason program rules, please see Articles 21 and 22 of the Collective Bargaining Agreement (beginning on page 131), available on . Kevin Garnett Jersey