OAKLAND -- The A's will celebrate the official release of A's broadcaster Ken Korach's new book on the late, great Bill King by staging signing sessions at O.co Coliseum prior to games on Sept. 6-8.

Korach, King's broadcast partner from 1996 through 2005 and voice of the A's since King's passing in '05 at age 78, will be available in the Bar & Grille from 6 to 6:30 p.m. PT on Sept. 6, and from noon to 12:30 p.m. the following two days to sign copies of "Holy Toledo - Lessons from Billy King: Renaissance Man of the Mic." The book will be available for $18.99.

The book will also be available during that weekend's series against the Astros at the A's team stores at Gates C and D, as well as on Amazon.com and at select Bay Area book stores beginning Sept. 6.

King was not only the longtime voice of the A's, but also of the Warriors and Raiders, and is considered an unmatched figure in Bay Area sports and media history, and according to Korach, the greatest sportscaster this country has produced.

Korach did extensive research for the book, engaging in more than 50 interviews with King's family members, colleagues, friends and associates. His work brings to life King's many great calls and also tells the story of a man known to be a student of Russian literature, a passionate sailor and talented painter.

Reddick undergoes MRI on sprained right wrist

SEA@OAK: Reddick lays out to make diving grab

OAKLAND -- As quickly as losses are mounting for the A's, so too are injuries.

Josh Reddick exited after seven innings of Wednesday's 5-3 loss to the Mariners with a sprained right wrist he suffered while making a diving play in right field in the top half of the frame.

Reddick was sent to a nearby hospital for an MRI exam, the results not yet known as of early Wednesday evening. Those will determine whether the A's once again have to place Reddick on the disabled list, having already done so because of the same injury earlier in the season.

Reddick's injury surfaced just one day after catcher Derek Norris broke a toe, with the A's already playing without John Jaso, who is still dealing with concussion symptoms.

Norris hopes for quick return to give Vogt relief

SEA@OAK: Norris breaks toe attempting to block plate

OAKLAND -- Walking around with a broken bone in his big left toe Wednesday morning, A's catcher Derek Norris still wasn't ruling out the possibility of being available within a few days.

Neither was his manager.

"I never anticipate ever going on the 15-day DL," said Norris, injured in a play at the plate in Tuesday's 7-4 loss to Seattle. "If I can do everything without too much pain, I'm going to do it. The injury's not going to get any worse. It's only going to get better. So in my eyes, I'll just continue to progress each day."

"We don't feel like it's something that needs a surgical procedure at this point," A's manager Bob Melvin said. "With the day off [Thursday], we'll consider all our options. With a fracture like that, there is some thought that Derek will feel better in the coming days, but we'll see and hopefully have some resolution on Friday in Baltimore."

Though some clubs would've had no choice but to make a move already and bring in a backup catcher, the A's have the luxury of playing the waiting game because of Josh Donaldson's vast experience behind the plate.

Using the third baseman in such a way is far from ideal, though they nearly had to in Wednesday's 5-3 loss.

Melvin and a team trainer had to tend to Stephen Vogt during the sixth inning, when the catcher was thrown off his feet and onto the ground in a collision at home plate with Dustin Ackley. He ultimately stayed in the game, though Donaldson disappeared into the dugout in search of his gear while Vogt was down.

"It's nice to have that dynamic in a guy that can do that," Melvin said of Donaldson, "but we certainly don't want to have to put him behind the plate."

But Vogt is the only healthy catcher on the A's 40-man roster, with John Jaso already sidelined by ongoing concussion symptoms and Minor Leaguer Luke Montz dealing with a shoulder injury at Triple-A Sacramento.

Jaso took part in baseball activities for the first time in weeks Tuesday, hitting off a tee, but he's not expected to rejoin the A's for at least another month.

Next in line, Melvin said, is David Freitas, acquired in last year's Kurt Suzuki trade with the Nationals. The A's raved about the power-hitting Freitas in Spring Training, and he's hitting .301 in 21 games with Sacramento after batting just .214 in 61 games with Double-A Midland to start the season.

But before making any calls to the River Cats, the A's are likely to scan the waiver wire, while determining whether Norris requires a DL stint.

"We're lucky to have Stephen Vogt, but we're down our two catchers -- as far as Derek and Jaso -- and that's not desirable," Melvin said. "You deal with injuries and you go forward, but losing both your catchers can be tough."

The A's were in a similar situation just last week, when Norris was relegated to the bench because of back spasms.

"You put all the weight on one guy," Norris said. "He's been battling some nicks and bruises himself, especially being behind the plate. As much as we have to do with taking foul balls, blocking balls, you never know what's going to happen each day.

"I feel bad when I come out of games. Three times in the last two weeks, he's had to fill in for me. If I could help it, I would obviously change it."

Eye issue keeps Smith out of finale against Seattle

TOR@OAK: A's pad lead on Smith's double in the third

OAKLAND -- Oakland's Seth Smith was unavailable for a second straight game Wednesday because of an eye astigmatism. Smith wasn't even at O.co Coliseum, since he was seeing doctors, but was expected to board the team's charter flight to Baltimore come Thursday.

"I'm not sure how long it's been bothering him," said manager Bob Melvin. "Hopefully we have him Friday in Baltimore."

Smith, who typically starts against only right-handers as the designated hitter, hasn't been in the lineup since Saturday. He's batting .241 with six home runs and 33 RBIs on the season.

Alberto Callaspo, who has a pair of three-hit games in his last three contests, started at DH on Wednesday.