Justin Bieber the sports fanatic

Justin Bieber was spotted at the Pittsburgh Steelers' Bible study on Saturday night. The international star is a big sports fan.

Singer Justin Bieber, right, talks with actor Mark Wahlberg as he watches the Los Angeles Clippers play the Oklahoma City Thunder in the second half of Game 4 of the Western Conference semifinal NBA basketball playoff series, Sunday, May 11, 2014, in Los Angeles. (AP Photo/Mark J. Terrill)

Mayweather Jr. and Bieber celebrate Mayweather's victory over WBC/WBA 154-pound champion Alvarez at the MGM Grand Garden Arena in Las Vegas, Nevada

Floyd Mayweather Jr. (L) and singer Justin Bieber celebrate Mayweather's victory over WBC/WBA 154-pound champion Canelo Alvarez (not pictured) at the MGM Grand Garden Arena in Las Vegas, Nevada, September 14, 2013. Alvarez was previously undefeated in 42 fights. REUTERS/Steve Marcus (UNITED STATES - Tags: SPORT BOXING ENTERTAINMENT)

LOS ANGELES, CA - JULY 13: Singer Justin Bieber and ESPY winner for the Best Female Athlete Olympic downhill skier Lindsey Vonn attends The 2011 ESPY Awards at Nokia Theatre L.A. Live on July 13, 2011 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for ESPN)

LOS ANGELES, CA - JULY 13: the Best Female Athlete Olympic downhill skier Lindsey Vonn attends The 2011 ESPY Awards at Nokia Theatre L.A. Live on July 13, 2011 in Los Angeles, California.

Singer Justin Bieber sits courtside as he watches the Miami Heat host the Indiana Pacers during Game Seven of the Eastern Conference Finals of the 2013 NBA Playoffs at AmericanAirlines Arena on June 3, 2013 in Miami, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Mike Ehrmann/Getty Images)

Singer Justin Bieber sits courtside as he watches the Miami Heat host the Indiana Pacers during Game Seven of the Eastern Conference Finals of the 2013 NBA Playoffs at AmericanAirlines Arena on June 3, 2013 in Miami, Florida. (Photo by Mike Ehrmann/Getty Images)

Justin Bieber (R) attends an NHL playoff game between the San Jose Sharks and the Los Angeles Kings at Staples Center on May 28, 2013 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images)

¢LOS ANGELES, CA - FEBRUARY 20: Singers Justin Bieber (L) and Rihanna sit in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Noel Vasquez/Getty Images)

Singers Justin Bieber (L) and Rihanna sit in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

LAS VEGAS, NV - MAY 05: (L) Singer Justin Bieber holds up a belt for Floyd Mayweather Jr. before Mayweather Jr. takes on Miguel Cotto during their WBA super welterweight title fight at the MGM Grand Garden Arena on May 5, 2012 in Las Vegas, Nevada. (Photo by Al Bello/Getty Images)

Floyd Mayweather Jr. before Mayweather Jr. takes on Miguel Cotto during their WBA super welterweight title fight at the MGM Grand Garden Arena on May 5, 2012 in Las Vegas, Nevada.

ÁLOS ANGELES, CA - FEBRUARY 20: Singer Justin Bieber (L) with Chicago Bulls mascot 'Benny the Bull' in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Kevork Djansezian/Getty Images)

Singer Justin Bieber (L) with Chicago Bulls mascot 'Benny the Bull' in the audience during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

LOS ANGELES, CA - FEBRUARY 18: Justin Bieber plays at the 2011 BBVA NBA All-Star Celebrity Game at the Los Angeles Convention Center on February 18, 2011 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Noel Vasquez/Getty Images)

Justin Bieber plays at the 2011 BBVA NBA All-Star Celebrity Game at the Los Angeles Convention Center on February 18, 2011 in Los Angeles, California.

LOS ANGELES, CA - FEBRUARY 20: Singer Justin Bieber throws the ball during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Jeff Gross/Getty Images)

Singer Justin Bieber throws the ball during the 2011 NBA All-Star game at Staples Center on February 20, 2011 in Los Angeles, California.

LOS ANGELES, CA - JULY 13: Professional race car driver Danica Patrick and singer Justin Bieber attend The 2011 ESPY Awards at Nokia Theatre L.A. Live on July 13, 2011 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for ESPN)

Professional race car driver Danica Patrick and singer Justin Bieber attend The 2011 ESPY Awards at Nokia Theatre L.A. Live on July 13, 2011 in Los Angeles, California.

LOS ANGELES, CA - OCTOBER 26: Singer Justin Bieber wears the championship ring of head coach Phil Jackson of the Los Angeles Lakers as the Lakers play the Houston Rockets during their opening night game at Staples Center on October 26, 2010 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Jeff Gross/Getty Images) *** Local Caption *** Justin Bieber

Singer Justin Bieber wears the championship ring of head coach Phil Jackson of the Los Angeles Lakers as the Lakers play the Houston Rockets during their opening night game at Staples Center on October 26, 2010 in Los Angeles, California.

°LOS ANGELES, CA - APRIL 17: Justin Beiber and girlfriend Selena Gomez watch the game between the San Antonio Spurs and the Los Angeles Lakers at Staples Center on April 17, 2012 in Los Angeles, California. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Harry How/Getty Images)

Justin Beiber and girlfriend Selena Gomez watch the game between the San Antonio Spurs and the Los Angeles Lakers at Staples Center on April 17, 2012 in Los Angeles, California.

NEW YORK - JUNE 04: Singer Justin Bieber holds the Stanley Cup prior to performing on NBC's TODAY Show on June 4, 2010 in New York City. (Photo by Mike Coppola/Getty Images for NHL) *** Local Caption *** Justin Bieber

Singer Justin Bieber holds the Stanley Cup prior to performing on NBC's TODAY Show on June 4, 2010 in New York City.

ºDALLAS, TX - JUNE 07: Singers Justin Bieber (C) and Selena Gomez attend Game Four of the 2011 NBA Finals between the Dallas Mavericks and the Miami Heat at American Airlines Center on June 7, 2011 in Dallas, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement (Photo by Mike Ehrmann/Getty Images)

Singers Justin Bieber (C) and Selena Gomez attend Game Four of the 2011 NBA Finals between the Dallas Mavericks and the Miami Heat at American Airlines Center on June 7, 2011 in Dallas, Texas.

NEW YORK - DECEMBER 07: Singer Justin Bieber watches the game between the New York Knicks and the Portland Trail Blazers at Madison Square Garden on December 7, 2009 in New York, New York. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this Photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Nick Laham/Getty Images)

Singer Justin Bieber watches the game between the New York Knicks and the Portland Trail Blazers at Madison Square Garden on December 7, 2009 in New York, New York.

LOS ANGELES, CA - FEBRUARY 18: Justin Bieber and team West celebrate at the 2011 BBVA NBA All-Star Celebrity Game at the Los Angeles Convention Center on February 18, 2011 in Los Angeles, California. (Photo by Noel Vasquez/Getty Images) *** Local Caption *** Justin Bieber

Justin Bieber and team West celebrate at the 2011 BBVA NBA All-Star Celebrity Game at the Los Angeles Convention Center on February 18, 2011 in Los Angeles, California.

Spurs rout Lakers, improve spot atop West

Singer Justin Bieber kisses actress Selena Gomez during the first half of an NBA basketball game as the San Antonio Spurs play the Los Angeles Lakers, Tuesday, April 17, 2012, in Los Angeles. (AP Photo/Jason Redmond)