Im sure it was Jim Watt fighting for the world title against Alfredo Pitulua in 1979 when i was just 7 years old. I know for sure that i watched him defending the title against Charlie Nash in 1980 and then listened to his defence against Howard Davis on the radio
I remember trying to stay up and watch Lewis Vs Tyson when I was young but there first full fight I watched was Mayweather Vs ODLH fan of Mayweather ever since that day he was hilarious in the build up to that fight
I'd like to add, that first fight I ever saw live in person was Katsidis-Casamayor, that was a hell of a fight and I was sitting in the 2nd row, behind Shane Mosley..
I have no real idea the first one I saw on TV but the first fight card I saw in person was headlined by Frankie Warren unanimously decisioning Gene Hatcher at Arco Arena in Sacramento, Ca.
First fight I remember watching on TV was John Mugabi vs James Green. I was watching with my mom and she said she hated boxing but also loved it. Went to some local live shows. First world class match I saw was Pac/Morales 2.
Dating myself here but for my first live boxing match I watched Ray Mercer nearly decapitate Tommy Morrison.