A young fan stands outside of Angel Stadium of Anaheim in Anaheim, CA.
Fans shag balls on Waveland Avenue during batting practice at Wrigley Field in Chicago, IL. Dave Davison, second to the right, has collected more than 5000 balls in more than 20 years.
The Pittsburgh Pirates Pierogies race at the end of the 5th inning at PNC Park in Pittsburgh, PA.
A man dressed as Superman walks around Chase Field in Phoenix, AZ, occasionally stopping to give fans high fives and take pictures.
Fans watch the game from the upper deck in right field at Busch Stadium in St. Louis, MO.
Washington Nationals fans walk past a banner displaying a portion of the Nationals motto, "Nothing but Natitude," in Washington, D.C.
Recruits and graduates of the Marine Corps Recruit Depot stand at attention before a game at Petco Park in San Diego, CA. At each home Sunday game, the Padres honor members of the military.
Huge windows and retractable roof create long shadows at Miller Park in Milwaukee, WI.
Lydia and Tony Jimenez kiss for the "kiss cam" on the jumbotron at Marlins Park in Miami, FL. They are frequently featured as the last couple and draw boisterous cheers from fans. Last year they attended all 81 games. They met in Puerto Rico and have been married 61 years.
Art, who has lived in Detroit for more than 30 years, collects bottles before a game at Comerica Park in Detroit, MI.
Social worker Joy Aisha Bell, left, laughs with Joann Wilson, who was attending her first baseball game at Camden Yards in Baltimore, MD.
Ushers at Coors Field in Denver, CO walk the seats just after the gates open.
Jay holds his son Luca up on his shoulders at Citi Field in New York, NY.
Fans try to get a ball from outfielder Hunter Pence before the start of the game at AT&T Park in San Francisco, CA.
Dodger Stadium in Los Angeles, CA is repainted during every off-season.
Dave Clarke holds his cigar at the Cuesta Rey Cigar Bar at Tropicana Field in Tampa, FL. Tropicana Field is the only MLB stadium with a cigar shop.
Tony Solis wears a chain with a medallion in the shape of the Astros logo that his dad purchased for his birthday. Minute Maid Park. Houston, TX.
David has been an usher at Turner Field in Atlanta, GA for 16 years. He works in Aisle 116. He collects pins, including those from the U.S. Armed Services, and displays them on his uniform. He served in the Army, his brother served in the Navy and his son is a Marine.
A young fan waits for an autograph at Fenway Park in Boston, MA.
From left, Jessica, Tom, Linda, Turtle and Ray share a laugh on the outfield concourse at Globe Life Park in Arlington, TX.
An usher sleeps on a post-game train back to downtown after a game at Citizens Bank Park in Philadelphia, PA.