Roommates, best friends, and teammates.

Sophomores Nikki Kallenberg and Annika Ringblom satisfy all those descriptions, but for one, hard-fought match, they met as opponents in the championship match of the Brown Invitational top singles flight.

Though it was Ringblom who came out on top last weekend at the Harvard Fall Classic, it was No. 98 Kallenberg who edged Ringblom in three sets this weekend, 2-6, 6-4, 7-6(3).

“It was really great because we could play a match and really leave it all on the court,” said Ringblom, when asked about facing Kallenberg.

“It was a really good match, it was close, and both of us were really happy about how we played. To play a competitive match, leave the court, and still be best friends is nice,” she added.

While she lost a tight match in the final of her singles flight, Ringblom was not to be denied a spot at the top of the podium, winning the tournament’s top doubles flight with her partner, senior Amanda Lin. The win marked the team’s second doubles win of the fall season.

She and Lin were partnered just days before leaving for Rhode Island, only getting a chance to practice together for a couple of hours.

Despite the short time frame, they secured an 8-0 victory over the Boston University squad of Johanna Hytoy and Sabrina Faybyshev in their first match together before winning, 8-1, against Rutgers ladies Gina Li and Mariam Zein.

Ringblom and Lin eventually faced off against Ana Yrazusta Acosta and Carol Benito of the University of Massachusetts-Amherst in the championship, winning, 8-5.

“Annika [Ringblom] worked a lot over the summer, playing tennis and doing a lot of interesting things,” said Harvard coach Traci Green of her sophomore standout. “She came back ready to go, and I’m proud to see all of her hard work pay off.”

Ringblom’s has found a measure of success early in the season, despite being asked to play both singles and doubles at a high level. For her part, the sophomore also views her offseason training as having played an integral part in her fast start to the fall season.

“It’s really exciting to see that all the hard work I put in this summer is paying off,” Ringblom said. “You can only get so good technically in tennis, but to really go to another level you have to work on your fitness.”

This tournament featured a number of flights for both singles and doubles.

The championship match of each flight was populated by Harvard women, which was a welcome sight for the team.

“For the freshmen, it is good for them to see that we are winning tournaments and flights,” junior June Lee said. “For the upperclassmen, it keeps us motivated and encouraged…. It keeps everything exciting.”