An ad hoc street musician beats on a traffic light with a drumstick in Kenmore Square. The Boston Red Sox defeated the Colorado Rockies 4-3 on Sunday night, claiming their second World Series win in the past four seasons.

Elizabeth A. Hass ’10 and Brooks L. Reed ’09 compete for the Erwin Schell Sailing Trophy on Sunday. The team placed first in its division.

Corey G. Harris ’10 and Alexandra M. Beyer ’10 perform in Mocha Moves Dance Group’s 3rd annual performance of “Mocha Nights.” The last performance takes place tonight in Kresge at 7:30 p.m. Tickets are $8 at the door.

Tim the Beaver is spotted at the Geiger Trophy, MIT’s annual intercollegiate costume sailing regatta. The theme of the event was “Noah and the Ark,” and participants dressed up as animals.

Alpha Chi Omega sisters (left to right) Gwendolyn B. Johnson ’08, Stephanie V. Brenman ’09, Meghana A. Limaye ’08, and Jessica Hickey ’07 chant at the Panhel Reaffiliation Ceremony in La Sala de Puerto Rico last Monday night.

Gary M. Matthias ’08 inspects his team’s robot before a match. Team Supernova ended up taking second place.