Bolstered by several superb penformances, the Harvard track team successfully completed the annual defense of its Greater Boston Championship crown yesterday at Boston College. The Crimson added ten first-place tallies to its two victories on Tuesday to topple runner-up Northeastern by a 128-61 score. Boston College was third in the seven-team field with 57 points and Boston University was fourth with 16.

Harvard captain Keith Colburn was voted the most outstanding performer in the meet after he captured the mile and 880 and started the Crimson off to a lightningfast mile-relay victory. Colburn ran a 4:07.6 mile and went on to set a new GBC record in the 880 with a time of 1:50.0.

In the mile relay. Walter Johnson turned in a blistering 47.6 quarter to push Harvard to a 3:16.9 walkway in the event. Colburn got the Crimson off to a lead with his 50.2 opening leg and was followed by Ed Dugger with a 49.5 clocking. After Johnson's quick lap. Ben Lounsbury finished with a 49.6 anchor leg to clinch the victory.

Johnson had won both hurdles races earlier in the afternoon and had also grabbed fourth place in the triple jump, which was won by teammate Bob Galliers. In the 440 hurdles Johnson had to fight past Lounsbury, who led Tuesday's qualifying heats, enroute to a 53.0 clocking. Lounsbury finished in 53.8.

Crimson Cruises

Harvard runners easily dominated the two long-distance events of the day. Returning to action after a year-long injury. Jon Enscoe won the three-mile run in 14:34.5. edging senior Erik Roth by .7 seconds. And sophomore Mike Koerner coasted to victory in the rarely run six mile race in a time of 30:43.6.

Steadily improving Chris Alvord made an impressive showing in the sprints, winning the 220 in 22.1 and helping the 440 relay team to a 42.9 victory. Alvord also finished second in the 100 with a 10.1 effort.

After being voted the meet's most outstanding participant. Colburn had special praise for Walter Johnson. "Walter would have won the [outstanding performance] award if he had set a record in his hurdles race." Colburn said. Johnson's 14.7 clocking in the 120 high hurdles was just off the meet record.

Biggest Win

The Greater Boston victory was the ninth in a row for the Crimson, which has never been defeated in GBC competition. Harvard's freshmen also maintained their unblemished record in the meet, easily sweeping past Northeastern, 111-50 M. I. T. followed with 14 points. while Brandeis finished last with six.