DETROIT — Two ailing players who have at least an outside chance of being on the A's roster should the club advance to the second round of the playoffs seem to be getting good marks from the medics.

Starting pitcher A.J. Griffin (right arm tendinitis) threw on the side in Oakland and while manager Bob Melvin said the right-hander isn't 100 percent, he's better.

``He hasn't thrown off the mound yet,'' Melvin said.

To get him to the point where he'd be ready to try to start in a theoretical American League Championship Series, Griffin will not only have to throw off a mound, but he'd have to face hitters. He could do that at the instructional league in Arizona, but it's more likely he'd throw batting practice to his teammates.

``He'd have to throw a pretty strenuous bullpen session,'' Melvin said, ``and see how his arm feels the next day.''

As for catcher John Jaso (concussion), he is in Arizona getting in daily at-bats with the instructional league players. Jaso is unlikely to make the team as a catcher, but the lefty could make a showing as a designated hitter or pinch-hitter.

Melvin said Jaso was on the same program as he's been on for the last few weeks, once he got cleared to resume baseball activities after missing two months.