Barcelona coach Luis Enrique is concerned Neymar may be set for a lengthy lay-off after the Brazilian superstar injured his groin before their final Champions League group match.

The defending champions were already through to the Champions League's last 16 for the 12th year in succession and ended their group campaign on Wednesday with a 1-1 draw at Bayer Leverkusen.

Olivier Giroud netted a hat-trick to propel Arsenal to a 3-0 win at Olympiakos on Wednesday and send the Gunners through to the Champions League knockout stages at the expense of the Greeks.

The France striker gave Arsenal a first-half lead at the Karaiskakis Stadium in Piraeus before netting twice more, the third coming from the penalty spot, to ensure Arsene Wenger's side reached the last 16 of the competition for the 16th year in a row.

Manchester United manager Louis van Gaal found himself under attack from all sides on Wednesday following his team's meek group-phase elimination from the Champions League.

A picture of the Dutchman sitting in the dug-out with his head in his hands during Tuesday's 3-2 defeat at Wolfsburg adorned several back pages, The Times branding United's exit "Embarrassing, Amateurish, Excruciating".

Japan's figure skating superstars Yuzuru Hanyu and Mao Asada will both be bidding to make history in the ISU Grand Prix Final in Barcelona starting on Thursday.

Olympic champion Hanyu is targeting an unprecedented third straight men's gold as three-time world champion Asada chases a record fifth women's crown.

World number three Roger Federer has shaken up his 2016 coaching team with six-time Grand Slam champion Stefan Edberg leaving and Croatian Ivan Ljubicic drafted in to replace the Swede.

Federer, the 17-time Grand Slam winner, issued a statement on his website Tuesday saying that "his childhood idol" Edberg had originally signed up as an assistant coach only for 2014.

Klay Thompson scored 39 points as the Golden State Warriors withstood a furious late rally to defeat the Indiana Pacers 131-123 on Tuesday and stretch their record season-starting, winning streak to 23 games.

The reigning NBA champions had looked to be romping to victory after piling on the points to lead by 28 at 111-83 heading into the final quarter.

Barcelona contest the Club World Cup in Japan boasting arguably the most devastating strike-force the game has seen and as red-hot favorites to lift the trophy for a third time.

Barring any shocks, Argentina's River Plate will await the European champions in the final in Yokohama on December 20.

Louis van Gaal says he is unable to defend himself following Manchester United's Champions League exit, but he insists the Red Devils are improving under his tenure.

United crashed out with a 3-2 defeat at Wolfsburg, who made club history by reaching the knock-out stages as Group B winners.

Cristiano Ronaldo struck four times to set a new record for goals scored in the Champions League group stage as Real Madrid also equaled the record victory in the competition with an 8-0 mauling of Malmo on Tuesday.

Troubled French striker Karim Benzema also scored his first hat-trick for five years, whilst Mateo Kovacic added his first goal for the Spanish giants.

Zlatan Ibrahimovic set another record as Paris Saint-Germain finished their Champions League pool phase on a positive note in beating Shakhtar Donetsk 2-0 at the Parc des Princes on Tuesday.

Brazilian Lucas Moura broke the deadlock on 57 minutes before record goalscorer Ibrahimovic set the seal on their group A victory with the second four minutes from time.