He took the event by 18.55 seconds from his HM Plant Honda team-mate Steve Plater after taking the lead on his first lap and then recording the fastest ever lap time on the Mountain Circuit on lap two with 130.442mph.

Plater clawed some time back on the fourth lap but McGuinness moved into top gear on the fifth eventually taking the win from his team-mate with Guy Martin in third.

MotoGP legends Valentino Rossi and Giacomo Agostini were on hand to watch McGuinness make history.

McGuinness then took a brace of fifths in the Supersport and Superstock races on Tuesday.

Speaking afterwards, it was a slightly disappointed John that said: "It's been a hard day today and whilst a couple of fifths aren't too bad, I was definitely hoping for a bit more, especially in the Superstock race.

"It's the bike I'm riding all year and the race started perfectly when I slotted onto 'P1' but I knew on the second lap that any chance of winning was over.

"I had a couple of slides at Quarter Bridge and Braddan Bridge and then a major one at Greeba Bridge when my feet were off the pegs and everything.

"I really thought I was off.

"After that, I just had to ride at a safe pace and brought the bike home in fifth.

"The pace in today's races has been phenomenal and fair play to the boys at the front but I'll be gunning for them in the final two races this week!"

John was back out in action on Wednesday in the second 4-lap Supersport race.