Quique Setien's Barcelona bow, Conor McGregor's UFC return and Serena Williams begins bid for history - The National's weekly sports quiz

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  Conor McGregor celebrates his first round TKO victory againt Donald Cerrone in a welterweight bout during UFC246 at T-Mobile Arena in Las Vegas. AFP

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  Conor McGregor celebrates his win against Donald Cerrone. Reuters

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  Conor McGregor reacts following his first round TKO victory against Donald Cerrone. Reuters

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  Boxer Tyson Fury watched on from cage side. AFP

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  Conor McGregor pins Donald Cerrone against the cage. Reuters

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  Conor McGregor lands a kick against Donald Cerrone. Reuters

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  Conor McGregor is introduced before fighting Donald Cerrone. Reuters

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  Donald Cerrone is introduced before fighting Conor McGregor. Reuters

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  Conor McGregor before his fight against Donald Cerrone. Reuters

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  Conor McGregor moves in for a knee hit against Donald Cerrone. Reuters

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  Conor McGregor lands a kick to the face of Donald Cerrone. Reuters

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  MMA Mixed Martial Arts - UFC 246 - Welterweight - Conor McGregor v Donald Cerrone - T-Mobile Arena, Las Vegas, United States - January 18, 2020 Conor McGregor enters the arena before his fight against Donald Cerrone REUTERS/Mike Blake

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  MMA Mixed Martial Arts - UFC 246 - Welterweight - Conor McGregor v Donald Cerrone - T-Mobile Arena, Las Vegas, United States - January 18, 2020 Conor McGregor with Jerry Cerrone, grandmother of Donald Cerrone after the fight REUTERS/Mike Blake

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  MMA Mixed Martial Arts - UFC 246 - Welterweight - Conor McGregor v Donald Cerrone - T-Mobile Arena, Las Vegas, United States - January 18, 2020 Conor McGregor before his fight against Donald Cerrone REUTERS/Mike Blake

It has been another busy week in the world of sport.

Many of Europe's top football leagues made their return from the winter breaks and there were plenty of eyes on new Barcelona manager Quique Setien and Borussia Dortmund's new striker Erling Haaland.

Elsewhere, the Australian Open got underway on Monday - with Serena Williams aiming for a record-equalling 24th Grand Slam title - Lee Westwood emerging victorious at the Abu Dhabi HSBC Championship presented by EGA, and England taking a 2-1 Test series lead against South Africa.

Discover how well you have been paying attention to the sport's world this week by taking our quiz below.

Good luck!