Complex sentence: Glaze enrolled at Dartmouth in 1902, being followed there by his younger brother John, and under Folsom played a notable role in the school's first-ever football victory over Harvard in 1903, a game in which Harvard dedicated its new stadium.
Split into simpler sentences: Glaze enrolled at Dartmouth in 1902, being followed there by his younger brother, John. Under Folsom, he played a notable role in the school's first-ever football victory over Harvard in 1903, a game in which Harvard dedicated its new stadium.