Under sunny skies and mild con­di­tions, 500 seniors and 100 alumni will watch the Red Sox take on the team’s greatest rival, the New York Yan­kees, Friday during North­eastern Night at Fenway Park. Pres­i­dent Joseph Aoun will throw out the cer­e­mo­nial first pitch and senior Allyson Tess­mann will sing the national anthem.

This is a per­fect example of the strong rela­tion­ship between the Red Sox and Husky Nation,” said Jack Moynihan, vice pres­i­dent of alumni rela­tions and The North­eastern Fund. “With ter­rific annual events like NU Family Day at Fenway and the Huskies vs. Red Sox cookout and spring training game, we’ve built a great part­ner­ship between two of Boston’s most sto­ried institutions.”

Tess­mann, a music major, won the “NU Idol” com­pe­ti­tion for seniors, singing an a cap­pella song and “The Star-​​Spangled Banner” for a panel of judges. The Portage, Wisc., native, has per­formed for smaller audi­ences during high school foot­ball games and talent shows.

But never has she per­formed in front of a crowd as large as the 35,000 expected to cheer on the Red Sox.

I’m not ner­vous now, but I’m sure I will be when I’m standing on the field,” she said a few hours before her performance.

In late Feb­ruary, North­eastern alumni, family and friends cel­e­brated the start of a new base­ball season in Fort Myers, Fla., at the sixth annual Huskies vs. Red Sox cookout and spring training game.

The office of alumni rela­tions, in con­junc­tion with the Naples alumni chapter, hosted the event, with 600 guests on hand to enjoy a pre-​​game cookout before watching the Huskies in their annual show­down against the Red Sox at City of Palms Park.

North­eastern Night at Fenway is part of senior week, which includes a series of events for the 2,700 stu­dents set to grad­uate on May 1.