Complex sentence: As a senior, on defense, he had 4 interceptions, 8 passes defensed, and on offense, he rushed for 6 touchdows, and ran back a punt, and a kickoff for touchdowns.
Split into simpler sentences: As a senior, on defense, he had four interceptions and eight passes defensed. On offense, he rushed for six touchdowns, and ran back a punt and a kickoff for touchdowns.