Pro basketball hall of famer Bill Walton may have been the tallest man at San Diego’s Jacobs Music Center – Copley Symphony Hall on Saturday night, but he was not the biggest. Instead, it was legendary violinist Itzhak Perlman who was the evening’s star attraction, dazzling concertgoers young and old, short and (very) tall with the first of two masterful weekend performances of Beethoven’s Violin Concerto in D Major, Op. 61.