A difference-in-differences analysis — a statistical method that determines the impact of a 'treatment' in an observational study — found that 7.51 fewer concussions per 1000 kickoff plays occurred following the rule change.

In this week's edition of Is Stat So?, defenses across the board had an impressive weekend, and football gave up touchdowns to an unlikely group of players.

Penn field hockey finished with a split result, losing a tight conference contest to No. 12 Harvard 2-1 on Saturday before rebounding with a comprehensive 3-0 victory against crosstown rival Temple.

The Quakers lost to Brown in a tight five-set match at the Palestra after falling to Yale in straight sets the previous day. 

In Penn soccer’s game against Cornell on Saturday, senior goalkeeper Scott Forbes was forced into action for all 102 minutes of the contest and posted 11 saves, seven of which came in the first half.

The Quakers were dominated on both sides of the ball, as the game got out of hand quickly in the third quarter. Here are three takeaways from the game.

In its 2-0 victory, Penn held Cornell to just three shots on goal with the Big Red struggling to break down an organized Quakers' defense that has now kept a clean sheet for more than 360 minutes.

The Tampa Bay Buccaneers wide receiver was a healthy scratch in the first three games of the season as the sixth player on the depth chart at his position, but will suit up Sunday against the Chicago Bears. 

The Quakers went back to back this weekend, with some of the men's team competing at the Nuttycombe Wisconsin Invitational in Madison, Wis. on Friday and the rest of the men and women's team racing the next day at the Paul Short Run in Bethlehem Pa.

The Red and Blue lost their second game this season and first in conference play, falling 1-0 to the Big Red in double overtime. The game’s lone goal came from the Big Red’s freshman Emeka Eneli in the 103rd minute.  

Behind its lineman on both sides of the ball, Dartmouth methodically dismantled Penn in both teams’ Ivy opener to the tune of 37-14. 

Coming off a huge win against Cornell where the defense and rushing attack played a huge role, the Quakers couldn't keep the good times rolling against divisional rivals Chestnut Hill.

Last season, the team scored only 10 goals en route to a 5-8-3 record. This season, the team has already shattered last year’s mark, putting up 15 goals through half as many games

The Quakers are set to play against Yale and Brown this week at home, and the battles will each bring their own set of unique challenges.

After a scoreless tie against Harvard this past weekend, Penn is looking for its first win in Ivy League play. On Saturday, the Quakers will get the opportunity on the road against Cornell.

The Quakers will be split between two meets over the weekend: the Nuttycombe Invitational in Madison, Wis. on Friday, and the Paul Short Invitational in Bethlehem, Pa. on Saturday. 

With this much turnover in just one offseason, the returning members of the defensive line have had an added amount of pressure to step up and perform. They’ve certainly responded well to the pressure.