ST. PETERSBURG, Fla. — Toronto Blue Jays pitcher J.A. Happ was released Wednesday from a Florida hospital, just a day after he was hit on the head by a line drive, and hopes for a quick return to the mound.

Bayfront Medical Center said in a statement that Happ was discharged after being upgraded from fair to good condition. Happ was taken there after being struck on the left side of the head by a ball off the bat of Desmond Jennings during Tuesday night’s game against the Tampa Bay Rays.

The Blue Jays said Happ was responsive and feeling better after suffering a head bruise and cut to his the left ear.

“I’m in good spirits,” Happ said in a statement released by the hospital. “I definitely appreciate the support of the baseball community. It’s been overwhelming, the messages and kind words I’ve been getting. I just want to thank everyone for that, and I look forward to getting back out there soon.”

Happ was placed on the 15-day disabled list rather than the seven-day concussion DL.

His frightening injury at Tropicana Field left players on both teams shaken and revived questions about whether Major League Baseball is doing enough to protect pitchers, who often find themselves in harm’s way on the mound.

Phillies

Halladay to have shoulder surgery: Philadelphia Phillies pitcher Roy Halladay will have arthroscopic surgery to repair a bone spur in his right shoulder.

On the 15-day disabled list because of inflammation in his throwing shoulder, the two-time Cy Young Award winner met with Dr. Lewis Yocum in Los Angeles on Tuesday.

“They’re going to go in and clean up the bone spur, clean up the rotator cuff and the labrum, try and keep that as unevasive as possible,” Halladay said.

“From what i understand, if they go in and see during surgery what they saw on the exams, i have a chance to come back and pitch this year — I have a good chance to come back and pitch this year. hopefully be a lot more effective.”

The 35-year-old right-hander is 2-4 with an 8.65 ERA in seven starts this season after missing nearly two months last year because of a strained back muscle.

“They said my range of motion will be better, my location will be better, hopefully the velocity will be better,” Halladay said. “They said the cause is a bone spur; the rotator cuff kept rubbing over it. Over time, it gradually created more and more of a tear. They want to get that cleaned up and get that out of there.”

Diamondbacks

Closer Putz goes on DL: The Arizona Diamondbacks have placed closer J.J. Putz on the 15-day disabled list on Wednesday because of a right elbow strain and recalled reliever Will Harris from Triple-A Reno before the finale of a three-game series with the Los Angeles Dodgers.

Putz, an All-Star in 2007 with Seattle, was injured in the ninth inning of the Diamondbacks’ 5-3 victory on Tuesday night and was replaced by former three-time All-Star closer Heath Bell. Bell got three outs for his second save of the season.

Putz is 2-1 with five saves and a 4.26 ERA in 14 appearances this year. He is in his third season with Arizona, having recorded a career-high 45 saves in 2001 and 32 last year.

The closing duties now will fall on David Hernandez and Bell.

Harris has 20 games of major league experience, all with Colorado last season, when he gave up 16 earned runs in 17 2-3 innings and struck out 19.

Astros

Humber moved to bullpen: The Houston Astros have moved struggling starter Philip Humber out of the rotation and into the bullpen.

Just a year removed from pitching the 21st perfect game in major league history, Humber has had a terrible start to 2013. He is 0-7 with an 8.82 ERA.

Dallas Keuchel, who started in Triple-A this season before joining the Astros, will take start Friday against Texas. Keuchel is 0-1 with a 4.96 ERA in six appearances.

Erik Bedard, who was moved into the bullpen after his last start on May 1, will return to the rotation to start on Saturday.

Orioles

Roberts to have hamstring surgery: Orioles second baseman Brian Roberts will undergo surgery on his ailing right hamstring, a procedure that will add an extra six weeks to his time on the disabled list.

Roberts was placed on the DL with a strained right hamstring on April 5. Unsatisfied with his recovery, Roberts visited Dr. Daniel Cooper in Dallas on Wednesday for a second opinion.

After the consultation, Roberts agreed to have surgery. Cooper will attempt to repair a muscle in the hamstring at the Carrell Clinic on Thursday, according to the Orioles.

The 35-year-old Roberts played in only three games this season before hurting his hamstring, the latest in a series of injuries he’s experienced over the past four years. Roberts has played in only 118 games since the start of the 2010 season.

Athletics

Reddick on 15-day DL with sprained wrist: The Oakland Athletics placed outfielder Josh Reddick on the 15-day disabled list with a sprained right wrist.

Reddick joins Oakland center fielders Coco Crisp (hamstring) and Chris Young (quadriceps) on the DL.

Reddick hurt his wrist colliding with the wall in foul territory while chasing a pop on April 7 at Houston. He missed three games, but the injury was not improving.

The club also recalled first baseman Daric Barton from Triple-A Sacramento. Reddick is batting just .152 — third lowest in the AL — with one home run and 14 RBIs in 29 games.

Cubs

Fujikawa works two innings in rehab: In Kodak, Tenn., Chicago Cubs reliever Kyuji Fujikawa said he’s feeling fine after throwing two scoreless innings Wednesday in a rehabilitation assignment with Double-A Tennessee.

Fujikawa allowed one hit and picked off the only Birmingham batter who reached base against him. The right-hander threw 16 pitches and didn’t strike out or walk anyone. He said Wednesday through an interpreter after his performance that, “I have no pain right now.”

The 32-year-old Fujikawa went on the disabled list April 13 with a strained right forearm. He originally was scheduled to pitch for Tennessee on Tuesday. His appearance was pushed back a day after rain shortened Tuesday’s game to five innings.

Fujikawa is 1-0 with two saves and a 12.46 ERA in five appearances with Chicago.