Giants placed RHP Brian Wilson on the 15-Day disabled list, retroactive to April 13, with a right elbow sprain.

Wilson will undergo season-ending surgery to repair structural damage in his right elbow. He's seeking a second opinion from Dr. James Andrews, but the bearded closer said he anticipates having another Tommy John surgery and missing the rest of the year. Sunday's roster move was procedural and Wilson will be shifted to the 60-day disabled list soon unless Dr. Andrews delivers miraculous news.

CSNBayArea.com's Andrew Baggarly reports Brian Wilson will undergo season-ending surgery to repair the UCL in his right (pitching) elbow.

According to John Shea of the San Francisco Chronicle, Giants closer Brian Wilson has structural damage in his elbow and faces possible surgery.

Uh oh. Shea also mentions that Wilson will possibly be meeting with Dr. James Andrews, which is never good news. Should Wilson need surgery, he'd be unlikely to return and contribute for the remainder of the season. In this case, Sergio Romo would step in as the likely closer and take on tremendous value in fantasy leagues everywhere. Stay tuned for further updates.

Brian Wilson calls his Thursday ankle injury a "nonfactor."

All the same, manager Bruce Bochy said Wilson won't be available for Friday's home opener after pitching on back-to-back days in Colorado. In addition to tweaking his ankle, Wilson needed 32 pitches to close out Thursday's 4-2 win, and surrendered a run in the process. Sergio Romo or Jeremy Affeldt will serve as stopper on Friday, with Wilson likely to be fine by Saturday.

Brian Wilson picked up a shaky save Thursday, but he turned his ankle and won't pitch Friday.

Wilson gave up a run and three hits before finishing off the Rockies today. The ankle has him day-to-day, but he should be back this weekend. Sergio Romo or Jeremy Affeldt could get a save chance Friday.

Brian Wilson threw in a minor league game Friday for a second straight day.

Wilson had some arm fatigue issues earlier this spring, but he made it through both appearances this week with no issues. He appears to be on track for Opening Day.

Brian Wilson racked up two strikeouts Thursday in a minor league exhibition game.

Wilson is over the arm fatigue that plagued him earlier this spring and should be active on Opening Day.

Brian Wilson is scheduled to pitch in a minor league game Thursday.

Wilson didn't pitch Wednesday, as many expected he would, but Giants' manager Bruce Bochy said he was fine and never scheduled to throw. Unless the Giants are trying to be extra-secretive and sneaky, we have no reason to think Wilson won't be ready for Opening Day.

Giants' manager Bruce Bochy said that Brian Wilson is fine and was never scheduled to pitch Wednesday.

Wilson was originally expected to make an appearance Wednesday, but there was apparently some miscommunication about his schedule. The bearded closer had some elbow inflammation last season and dealt with some arm fatigue earlier this spring, but Bochy is downplaying any health concerns. We'll have to take his word for it for now.

Brian Wilson (arm) is scheduled to pitch in a minor league game Saturday.

Wilson dealt with some arm fatigue earlier this week, but he made it through a minor league game on Thursday without any issues. Assuming all goes well Saturday, he'll likely throw an inning against the Royals on Monday.

Brian Wilson (arm) faced four batters Thursday in a minor league exhibition game.

Wilson retired all four hitters, racking up two strikeouts. The bearded closer reported feeling soreness in his throwing arm earlier this week, but he's already back on track and should be fine by Opening Day.

Brian Wilson is dealing with some minor soreness in his throwing arm.

The Giants aren't alarmed and Wilson is scheduled to pitch in a minor league game on Thursday. Unless there's something the Giants aren't telling us, the bearded closer appears to be on track for the start of the season.

Brian Wilson turned in a scoreless inning in his spring debut Sunday against the Mariners.

Wilson allowed a single, walked none and struck out one. He hasn't had any setbacks with his elbow this spring, but the Giants have gone carefully with him anyway.

Brian Wilson (elbow) threw 25 pitches during a live batting practice session Wednesday.

Wilson faced Buster Posey and Freddy Sanchez, which he thought was a pretty good test for his stuff at this point of the spring. "Those are the kinds of hitters you want to face," said Wilson, who mixed in a few sliders. The bearded closer is set to make his Cactus League debut on Sunday.

Brian Wilson (elbow) is scheduled to face hitters again Wednesday.

The Giants have slowly built up Wilson's workload this spring after he dealt with elbow inflammation last season, but he made it threw his first session against live hitters Sunday without incident. The bearded closer is scheduled to make his Cactus League debut on March 11. He shouldn't need many innings to get ready for the season.

Brian Wilson (elbow) threw to hitters Sunday for the first time this spring.

"It was coming out of his hand well and moving well," Emmanuel Burriss said. "He didn't look like he was holding back." Wilson is on pace to pitch in an exhibition game March 11. He is about a week behind the other pitchers in Giants camp due to mild elbow inflammation.

Brian Wilson (elbow) will throw to hitters Sunday for the first time this spring.

Wilson is about a week behind the other pitchers in Giants camp due to mild elbow inflammation, but he's progressing well and doesn't appear to be in any danger of not being ready for Opening Day. He's expected to make his Cactus League debut around March 11 or 12.

Brian Wilson (elbow) is planning to make his Cactus League debut around March 11 or 12.

The bearded right-hander is about a week behind the other pitchers in Giants camp due to mild elbow inflammation, but he's confident about being fine for the start of the regular season. "Opening Day, I'll be saving the game," Wilson said Monday in Arizona. "I'm ready."

Brian Wilson (elbow) was able to throw a free and easy bullpen session Thursday in Giants camp.

Wilson is still working to overcome the elbow inflammation that he developed at the end of the 2011 season, and seems to be on the right track. "It's getting better each time," Giants manager Bruce Bochy said Thursday. "That's what you're looking for."

Giants manager Bruce Bochy said Brian Wilson is fine and will throw as scheduled on Thursday.

Henry Schulman of the San Francisco Chronicle reported early Thursday that Wilson was on a list of pitchers who would not throw Thursday, but there has apparently been a change of plans. The bearded closer will continue to ramp up his workload in preparation for exhibition action.