Leffler helped UW-Oshkosh win its fifth straight match by defeating her No. 2 singles opponents from Lawrence University and UW-River Falls.
In UW-Oshkosh's 8-1 road victory over Lawrence University on Sept. 27, Leffler ousted the Vikings' Annie Harincar, 6-0, 6-1.
During the Titans' 9-0 road triumph over UW-River Falls on Oct. 1, Leffler beat the Falcons' Molly Deering, 6-0, 6-0.
Peters and Sagen also went unbeaten by winning their two contests at No. 1 doubles.
In UW-Oshkosh's victory over Lawrence University, Peters and Sagen defeated the Vikings' tandem of Lindsay Holsen and Katie Nottberg, 8-0.
During the Titans' win over UW-River Falls, Peters and Sagen outscored the Falcons' duo of Brittany Asfeld and Krista Haglund, 8-4.