• Ryan Cook (shoulder) pitched a perfect inning in relief in a rehab appearance for Class A Stockton on Thursday. The right-hander is expected to be reinstated from the disabled list when eligible Saturday.
• The A's announced on Thursday they've voided infielder Jake Elmore's option to Triple-A Sacramento in favor of placing him on the 15-day disabled list.
The infielder suffered a strained left quad in the weekend's Bay Bridge exhibition series.
"It bothered him more so than we thought," said Melvin.
• Former A's player Scott Hatteberg, currently serving as a special assistant for the club, has been selected as the A's representative as one of 30 former big leaguers who will participate in the Hall of Fame Classic on May 24.
The 75th anniversary event will be played at Cooperstown's historic Doubleday Field. Another former A's player, Hideki Matsui, will represent the Yankees in the event.