NCAA Women's Lacrosse Semifinals
Where: Johnny Unitas Stadium, Towson, Md.
TV: CBS College Sports.
 Northwestern (21-0) vs.  Pennsylvania (15-2), 6 p.m.
Pennsylvania is the last team to beat Northwestern, the four-time defending NCAA champion; the Quakers knocked off the Wildcats, 11-7, on April 27, 2008. Since then, Northwestern has won 27 games in a row, including a 10-6 victory over Penn in last year's national title game and an 11-9 decision over the Quakers last month. In the latter, Northwestern dominated the second half by winning 7 of 10 draw controls and holding onto the ball for nearly 26 minutes, according to Penn Coach Karin Brower. Defense is the Quakers' strength -- they lead Division I in scoring defense (5.82 goals against average) -- but in this season's game against the Wildcats, "we played defense too much," Brower said. Northwestern is the highest-scoring team in Division I (17.76 goals per game), and junior Katrina Dowd has 14 goals in the NCAA tournament, a two-game total that would put her sixth on Penn's team for the season. Senior Hannah Nielsen, who had a hand in seven of Northwestern's goals in the regular season meeting with Penn, holds NCAA records for single-game (10), single-season (75) and career assists (216).
 Maryland (21-0) vs.  North Carolina (15-4), 8:30 p.m.
North Carolina senior Amber Falcone, a Tewaaraton Trophy finalist, is considered to be the top defender in the country and is capable of playing lockdown defense against a single player. "But how do you use her against Maryland, and all those weapons? I think you have to play team defense," Tar Heels Coach Jenny Levy said. The Terrapins pride themselves on their balanced attack; they have seven players with at least 25 goals and three players with at least 30 assists. In their 13-8 victory over North Carolina on April 11 -- a win that clinched the ACC regular season title -- Maryland held a 35-18 edge in shots, and freshman Karri Ellen Johnson (Broadneck) scored four goals. Midfielder Caitlyn McFadden, also a Tewaaraton finalist, has 13 goals in the postseason (ACC and NCAA tournaments). Junior Megan Bosica, a two-time All-Met Player of the Year at Mount Hebron, leads North Carolina with 52 points (33 goals, 19 assists).