A.J. Griffin successfully threw a 50-pitch bullpen session on Friday.
A.J. Griffin (elbow) threw all of his pitches in a bullpen session Tuesday.
A.J. Griffin (elbow) threw 30 pitches -- fastballs and changeups -- from a mound on Tuesday.
A.J. Griffin (elbow) threw 35 pitches off the mound on Tuesday.
Athletics placed RHP A.J. Griffin on the 60-day disabled list.
A.J. Griffin (elbow) said Thursday that he has already completed three bullpen sessions.
A.J. Griffin (elbow) is slated to resume throwing bullpen sessions this week.
Athletics activated RHP A.J. Griffin from the 60-day disabled list.
Athletics transferred RHP A.J. Griffin to the 60-day disabled list.
A.J. Griffin underwent successful Tommy John surgery on Wednesday.
Athletics manager Bob Melvin confirmed Tuesday that A.J. Griffin will undergo season-ending elbow surgery Wednesday, though he's not of the exact procedure yet.
CBS Sports' Jon Heyman has confirmed that A.J. Griffin needs Tommy John reconstructive elbow surgery.
Joe Stiglich of CSN California reports that A.J. Griffin is likely to undergo Tommy John surgery next week.
A.J. Griffin will receive a second opinion on his ailing right elbow from Dr. Thomas L. Mehlhoff on Tuesday.