Key takeaways as Lincoln Riley talks USC's national signing day 2025by:Erik McKinney•12/04/24•ErikTMcKinneyRead In AppUSC head coach Lincoln Riley discusses the Trojans on 2025 National Signing Day (Erik McKinney/WeAreSC)The key takeaways as USC head coach Lincoln Riley spoke about the Trojans' 21-prospect haul on 2025 National Signing Day.