Answer
Katarina won the Knockouts Championship in TNA twice. She first won the title in 2010 by defeating Madison Rayne at the Lockdown pay-per-view. She lost the title to Mickie James at the Slammiversary pay-per-view later that year. Katarina regained the title in 2011 by defeating James at the Genesis pay-per-view. She lost the title to Gail Kim at the Lockdown pay-per-view later that year.