Complex sentence: Lipetz started playing baseball at an early age, having gotten hooked on the game on a trip in which he saw the New York Mets play, and at age 10 represented Israel at the Little League World Series preliminaries.
Split into simpler sentences: Lipetz started playing baseball at an early age, having gotten hooked on the game on a trip to New York in which he saw the New York Mets play. At age 10 he represented Israel at the Little League World Series preliminaries.