MMA’s leading all-women’s promotion returns to action on Friday night with an eight-fight lineup featuring a title fight in the main event. Former Strikeforce women’s bantamweight champion Sarah Kaufman (19-4) meets undefeated German contender Katharina Lehner (7-0) in the Invicta FC 29 headliner, with the winner taking home Invicta’s vacant bantamweight title, which was previously owned by Yana Kunitskaya (10-4) before she migrated to the UFC. Promotion officials recently announced a few changes to the lineup, with Sarah Kleczka (1-0) replacing Shaianna Rincon (2-0) in a bantamweight matchup with a debuting Lisa Spangler (0-0)