Baseball's opening day

Baseball season has begun and opening day was celebrated by baseball fans across the country. Our photographers covered ceremonial games in Baltimore, Cincinnati, Milwaukee, Phoenix, Anaheim and Atlanta. 

Below is a gallery of baseball's ceremonial first pitch, fans gathered in the stands, player introductions and more. 

See these photos on APImages.com

Phillies Reds Baseball

Cincinnati Reds mascot Rosie Red poses for a photograph with a fan before their opening day baseball game against the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/John Minchillo)

Phillies Reds Baseball

A spectator sits in the stands before an opening day baseball game between the Cincinnati Reds and the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/Michael Keating)

Twins Orioles Baseball

Baltimore Orioles manager Buck Showalter acknowledges fans as he is introduced before an opening day baseball game against the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

Twins Orioles Baseball

Baltimore Orioles' Hyun Soo Kim, of South Korea, runs onto the field before an opening day baseball game against the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

Phillies Reds Baseball

Volunteers hold a corner of a giant American flag before an opening day baseball game between the Cincinnati Reds and the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/John Minchillo)

Mariners Rangers Baseball

Texas Rangers Josh Hamilton, left, autographs a baseball for a young fan before a opening day baseball game against the Seattle Mariners, Monday, April 4, 2016, in Arlington, Texas. (AP Photo/Brandon Wade)

Phillies Reds Baseball

The Philadelphia Phillies practice before an opening day baseball game against the Cincinnati Reds, Monday, April 4, 2016, in Cincinnati. (AP Photo/John Minchillo)

APTOPIX Phillies Reds Baseball

Spectators gather on East Freedom Way outside Great American Ballpark before an opening day baseball game between the Cincinnati Reds and the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/Gary Landers)

APTOPIX Twins Orioles Baseball

A groundskeeper tosses dirt around home plate before an opening day baseball game between the Baltimore Orioles and the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

APTOPIX Twins Orioles Baseball

A vendor displays a hot dog with "Orioles" written in mustard before an opening day baseball game between the Baltimore Orioles and the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

Twins Orioles Baseball

Rolando Sanz, bottom center, sings a rendition of the national anthem as an American flag is pulled into place before an opening day baseball game between the Baltimore Orioles and the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

Phillies Reds Baseball

Former professional baseball player and Cincinnati Reds manager Lou Piniella throws out the ceremonial first pitch for an opening day baseball game between the Reds and the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/Michael Keating)

Phillies Reds Baseball

Aircraft belonging to the U.S. Navy VAW-120 Greyhawks Squadron fly over Great American Ballpark before an opening day baseball game between the Cincinnati Reds and the Philadelphia Phillies, Monday, April 4, 2016, in Cincinnati. (AP Photo/John Minchillo)

Nationals Braves Baseball

An opening day logo decorates the field before the start of the final season home-opening baseball game at Turner Field between the Atlanta Braves and the Washington Nationals, Monday, April 4, 2016, in Atlanta. The Braves will move to a newly constructed stadium for next season. (AP Photo/David Goldman)

Phillies Reds Baseball

Cincinnati Reds' Tyler Holt, left, slides home safe for the tying run against Philadelphia Phillies catcher Carlos Ruiz, right, off a sacrifice fly from Zack Cozart in the eighth inning of their opening day baseball game, Monday, April 4, 2016, in Cincinnati. (AP Photo/Gary Landers)

Phillies Reds Baseball

Cincinnati Reds center fielder Billy Hamilton catches out a fly ball to center field by Philadelphia Phillies' Cedric Hunter in the ninth inning of their opening day baseball game, Monday, April 4, 2016, in Cincinnati. (AP Photo/Gary Landers)

Twins Orioles Baseball

The sun sets against the B&O Warehouse behind right during an opening day baseball game between the Baltimore Orioles and the Minnesota Twins in Baltimore, Monday, April 4, 2016. (AP Photo/Patrick Semansky)

APTOPIX Twins Orioles Baseball

Baltimore Orioles' Adam Jones, right, hits teammate Matt Wieters in the face with a pie after an opening day baseball game against the Minnesota Twins in Baltimore, Monday, April 4, 2016. Wieters drove in the winning run on a single and Baltimore won 3-2. (AP Photo/Patrick Semansky)

Cubs Angels Baseball

A Boeing C-17 Globemaster III flies over during the national anthem prior to an opening day baseball game between the Los Angeles Angels and the Chicago Cubs, Monday, April 4, 2016, in Anaheim, Calif. (AP Photo/Mark J. Terrill)

Cubs Angels Baseball

Fans try to catch a ball hit for a two-run home run by Chicago Cubs' Miguel Montero during the sixth inning of an opening day baseball game against the Los Angeles Angels, Monday, April 4, 2016, in Anaheim, Calif. (AP Photo/Mark J. Terrill)

Rockies Diamondbacks Baseball

The Colorado Rockies line up during the National Anthem prior to a baseball game against the Arizona Diamondbacks, Monday, April 4, 2016, in Phoenix. (AP Photo/Matt York)

Rockies Diamondbacks Baseball

Colorado Rockies Nolan Arenado (28) is greeted at the plate by Carlos Gonzalez (5) and Charlie Blackmon (19) after hitting a three-run home run during the eighth inning of a baseball game against the Arizona Diamondbacks, Monday, April 4, 2016, in Phoenix. (AP Photo/Matt York)

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