UFC 329: McGregor v Holloway 2 - all you need to know

McGregor and Holloway are both former champions in the UFC but took very different paths to get to that point.

Ireland's McGregor signed for the UFC in 2013 as a featherweight and became unified champion after winning seven successive fights.

The 37-year-old went on to make history when he won the lightweight title three fights later - becoming the UFC's first simultaneous double champion.

McGregor has won 10 and lost four of his bouts in the UFC, with three of his past four trips to the octagon ending in defeat.

Holloway lost on his debut in 2012 and took 17 fights to get his hands on the featherweight title and went on to establish himself as one of the best to ever compete in the division.

The 34-year-old has won 23 and lost nine of his 32 bouts in the UFC, including a defeat to McGregor in 2013, and has competed across eight title fights.

As well as previously holding the featherweight belt, Holloway also won the symbolic BMF title - awarded to the 'baddest' fighter in the UFC.

This will be Holloway's debut at welterweight with McGregor competing twice previously at this weight class, beating Donald Cerrone and losing against Nate Diaz.

Both men favour the head when striking, with 70% of McGregor's strikes landing there and 65% of Holloway's.

McGregor built a reputation for finishing fights inside the distance with only 7% of his bouts going to decision, although it's worth bearing in mind that he has been inactive for five years.

Holloway, meanwhile, does not boast a prolific finishing rate with 56% of his fights going the distance.