BOSTON -- The Orioles will hold their annual Fan Appreciation Celebration during their last series of the season when they host the Boston Red Sox for three games beginning Monday, Sept. 26.

The celebration includes opportunities for fans to be randomly chosen to win prizes by "liking" the Orioles on Facebook or by entering the Orioles Fan Appreciation Celebration Sweepstakes on orioles.com. Prizes include a trip for two to Spring Training in Sarasota, Fla.; a spot in the Orioles Dream Week in Sarasota; VIP experiences at the ballpark in 2012; Orioles memorabilia and more.

Throughout the series, fans will be selected at random to win unique Orioles experiences, including on-field visits, Fan of the Game contests, the popular "Shirts Off Our Backs" promotion -- in which players autograph game-worn jerseys -- and the chance to take the field with Orioles players for the national anthem. Fans are encouraged to wear Orioles clothing and arrive at the ballpark early each day.

During each game of the series, nine fans will be randomly selected to take the field and stand with an Orioles player during the national anthem. One randomly selected fan will also be chosen for a chance to throw out the ceremonial first pitch during the final two games of the series. The Orioles Team Store will offer a 30 percent discount on select merchandise during the three-day Fan Appreciation Celebration, and a complete list of events and details can be found by visiting orioles.com or calling call 888-848-BIRD.

Reynolds sidelined for both games of twin bill

BOSTON -- Mark Reynolds was not in Monday afternoon's starting lineup, and the Orioles slugger confirmed that he wouldn't be available for either game of the day-night doubleheader against the Red Sox as he continues to suffer from the effects of being hit in the head on Saturday.

"We're not in position yet where we feel comfortable, so we'll see what [Tuesday] brings," manager Buck Showalter said. "We got kind of a baseline. ... [Reynolds] had this happen in Arizona last year, and you don't try to handicap it or talk about X-rays or whatever. I think from the limited experience we all have with it, you just kind of take it day by day and see how he feels."

Reynolds hit a three-run homer off Angels starter Ervin Santana in the first inning on Saturday night, and the right-hander plunked Nolan Reimold, the next batter, before hitting Reynolds on the helmet in his next at-bat in the fourth. Reynolds had a CT scan on Saturday and was put through a series of cognitive tests on Monday afternoon. He said he was feeling progressively better and would go through the same tests again on Tuesday.

Adam Jones (sore right thumb) also continues to progress and could see playing time on Monday, as Showalter said the center fielder was not unavailable by any means for the doubleheader.