Bob Keefe, who lettered in football, basketball, and baseball at Arlington High and Phillips Exeter, was elected captain of the Harvard golf team yesterday. The stocky junior, who played at number two this spring in his first year on the varsity, has been golfing seriously for less than three years.

Keefe won the Greater Boston Championship with a 76 and had a 10-4 record in team play. He will spend the summer playing in tournaments, mostly in the East, in preparation for what he expects will be Harvard's first undefeated season ever.

Lightweight Crew

Brian Sullivan, who entered Harvard with no experience in crew and has turned into one of the greatest lightweight coxswains in history, was elected captain of the 1968 varsity last Friday.

Sullivan moved in from Conard High School in West Hartford, Conn., to cox the first light boat in the fall of his freshman year. That boat went undefeated through the Eastern sprints; the varsity boat he steered last year went undefeated through the Thames Cup races at Henley; and this year's crew swept through its dual regatta schedule.

Sullivan had never been in a losing race before the Sprints this season, in which the lights finished fourth.

He is a big man for a cox -- in fact he's taller than the six man in this year's boat -- but according to one varsity veteran, "Sullivan's presence is worth a couple of lengths in any race."

Senior Mike Radetsky was named most valuable oarsman after two outstanding seasons on the first varsity boat.