Top-30 USC Trojans countdown: An instant-impact starter in the secondaryby: Erik McKinney07/18/25ErikTMcKinneyRead In AppUSC defensive back DJ Harvey at a spring ball practice with the Trojans (Erik McKinney/WeAreSC)A veteran cornerback addition makes the WeAreSC Top 30 countdown of most important USC Trojans, coming in at No. 17.