TMZ Sports has obtained the 911 call in the Lucas Glover domestic violence case ... and there are wild allegations being made by both the PGA star and his wife.
Krista Glover initially called 911 on Saturday to report she had been attacked by her mother-in-law at the Florida home they were renting while Lucas was playing in the Players Championship golf tournament.
"I've been attacked by my mother-in-law," Krista told the operator ... "She's locked herself in the room and attacked us."
A short time later, Lucas spoke to the operator and says his wife was LYING.