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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.

Justin Bieber the sports fanatic

Yahoo Sports

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