2010-11: Wildcat sabre team captain ... Captured the silver medal at the season-opening Burton Open ... Placed eighth at the Remenyik Open ... Finished 20th at the Penn State Garrett Open ... Posted a 10-3 record at the UC San Diego West Invitational, recording her 100th career victory in the process ... Surpassed 10 victories in back-to-back weekends, finishing 11-4 at the Notre Dame Duals before posting an 11-9 mark at the Northwestern Duals.
2009-10: Posted a 33-6 record in four tournaments for Northwestern ... Opened the season with a 15-2 performance at the NU Duals ... Also posted a 2-0 record at the Notre Dame Duals before finishing 9-2 at the second installment of the NU Duals ... Placed 13th at the Midwest Conference Championships with a 7-2 record.
2008-09: Finished 42-34 in her sophomore season ... Opened up the year with a 10-2 record at the NU Duals ... Went 9-8 in the winter portion of the Duals ... Finished the year strong, posting a 7-3 record at the Notre Dame Duals and went 6-2 at the Midwest Conference Championships, finishing 15th ... Qualified for the NCAA Midwest Regionals where she finished 10th with a 4-7 record.
2007-08: Competed in the final three tournaments for Northwestern, compiling a 20-9 record ... Went 6-5 at the NU Duals (2/3) in her collegiate debut ... Had an impressive showing at the Notre Dame Duals (2/10), finishing at 7-2 on the day ... Followed up that performance with a 7-2 outing at the Midwest Fencing Conference Championship (2/24), as her eighth-place finish was the tops among the Northwestern sabres.
High school: Founded West Morris Mendham High School fencing program as a sophomore ... Earned all-state, all-conference, and New Jersey Star-Ledger All-State honors in 2005 ... Led school to district championship as captain her junior year ... Finished third in the Under-20 Junior Olympic qualifiers in 2006 ... Placed in top ten at New Jersey State Tournament in 2006 ... Took third in Denise O'Connor's High School meet in 2006 ... Led girl's saber squad to third place at Santelli tournament in 2005 and ninth at state tournament ... Finished 26-9 as a junior ... Won 2005 Mendham Fencing Club tournament with Lilov Fencing Academy club team ... Class Vice-President ... Editor of high school newspaper ... Treasurer of Student Council ... National Honor Society member ... Deer Leader.
Personal: Born Jillian Anna Mahen ... Daughter of James and Cheryl Mahen ... Brother Andy Mahen was a four-time national finalist fencer at Duke ... Brother Jay Mahen was an alternate on the Penn State fencing team ... Fenced on same club team as former Northwestern teammate Whitney White ... Majoring in journalism.
Mahen's Career Statistics
| Season | Result | Pct. | Midwest Conference | NCAA Regionals | NCAA Championships |
| 2010-11 | 47-30 | .610 | --- | --- | --- |
| 2009-10 | 33-6 | .846 | 7-2 (13th) | --- | --- |
| 2008-09 | 42-34 | .553 | 6-2 (15th) | 4-7 (10th) | --- |
| 2007-08 | 20-9 | .690 | 7-2 (8th) | --- | --- |
| Career | 142-79 | .643 | --- | --- | --- |