The high school football team in San Saba, Texas, plays in a stadium known officially as Rogan Field. Unofficially, it's known as The Graveyard.
Yes, it once was a cemetery. Yes, not all the graves were removed before it was converted into a football stadium.
James Harkey, a member of the first San Saba team to play at Rogan Field in 1935, helped move tombstones from the cemetery during its conversion to a football stadium.Additional info on the disrespected burial ground may be found here and here.
"There were a lot of people buried there," said Harkey, now 85. "When we started playing there, we didn't think about the graves underneath us. We just needed a place to play. We were just interested in playing football." [Link]